AI & ChatGPT searches , social queriess for OPTICAL MATERIAL
Search references for OPTICAL MATERIAL. Phrases containing OPTICAL MATERIAL
See searches and references containing OPTICAL MATERIAL!
Search references for OPTICAL MATERIAL. Phrases containing OPTICAL MATERIAL
See searches and references containing OPTICAL MATERIAL!OPTICAL MATERIAL
Optical materials are transparent materials from which optical lenses, prisms, windows, waveguides, and second-surface mirrors can be made. They are required
Optical_material
Academic journal
Optical Materials is a peer-reviewed scientific journal that publishes original papers and review articles on the design, synthesis, characterisation
Optical_Materials
Branch of physics
nonlinearities in the optical behaviour of a material, i.e. the motion of bound electrons, field-induced vibrational or orientational motions, optically-induced acoustic
Nonlinear_optics
Academic journal
Advanced Optical Materials is a monthly peer-reviewed scientific journal published by Wiley-VCH. It was established in 2013, after a section with the
Advanced_Optical_Materials
Inorganic, nonmetallic solid prepared by the action of heat
Optically transparent materials focus on the response of a material to incoming light waves of a range of wavelengths. Frequency selective optical filters
Ceramic
Physical property of allowing light
structure of most liquids are mostly responsible for excellent optical transmission. Materials that do not transmit light are called opaque. Many such substances
Transparency_and_translucency
Physics concept
physics, optical depth or optical thickness is the natural logarithm of the ratio of incident to transmitted radiant power through a material. Thus, the
Optical_depth
Special glass type used for optical systems
expansion and other parameters. Lenses produced for optical applications use a wide variety of materials, from silica and conventional borosilicates to elements
Optical_glass
Light-conducting fiber
An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers are widely used
Optical_fiber
Academic journal
Optical Materials Express is a monthly peer-reviewed and open access scientific journal published by Optica. Founded in 2011, it covers advances in and
Optical_Materials_Express
Organic materials are expected to have relatively strong nonlinear optical properties due to delocalized electrons at π − π {\displaystyle \pi -\pi } *
Organic nonlinear optical materials
Organic_nonlinear_optical_materials
Scientific instrument using light waves for image viewing
various materials Spectrometer or monochromator for generating or measuring a portion of the optical spectrum, for the purpose of chemical or material analysis
Optical_instrument
Flat, usually circular disc that encodes binary data
the material used on the reflective layer on an optical disc may be determined by shining a light through the disc, as different dye and material combinations
Optical_disc
guided mode (known as return loss) (see Optical fiber connector). Without the use of an index-matching material, Fresnel reflections will occur at the
Index-matching_material
Device used to disperse light
In optics, a dispersive prism is an optical prism that is used to disperse light, that is, to separate light into its spectral components (the colors
Dispersive_prism
Inorganic compound
as an infrared optical material, transmitting from visible wavelengths to just over 12 micrometers. It can be used planar as an optical window or shaped
Zinc_sulfide
Chemical compound
important material for optical waveguides, mobile phones, piezoelectric sensors, optical modulators and various other linear and non-linear optical applications
Lithium_niobate
Refractive property of materials
the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic
Birefringence
Shielding an object from view using materials made to redirect light
accomplished by manipulating the paths traversed by light through a novel optical material. Metamaterials direct and control the propagation and transmission
Metamaterial_cloaking
Substance or mixture of substances that constitutes an object
include the optical, electrical, and magnetic behavior of materials. Hyle, the Greek term, relevant for the philosophy of matter Category:Materials "Definition
Material
U.S. technology company
Corp. (formerly II-VI Incorporated) is an American manufacturer of optical materials and semiconductors. As of 2023, the company had 26,622 employees.
Coherent_Corp.
Rotation of the plane of linearly polarized light as it travels through a chiral material
the plane of polarization about the optical axis of linearly polarized light as it travels through certain materials. Circular birefringence and circular
Optical_rotation
Branch of physics that studies light
a pool of water). Optical materials with varying indexes of refraction are called gradient-index (GRIN) materials. Such materials are used to make gradient-index
Optics
Transparent non-crystalline solid material
suitable for manufacturing optical lenses, prisms, and optoelectronics materials. Extruded glass fibres have applications as optical fibres in communications
Glass
of the materials have a well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion
List_of_refractive_indices
Limit at which an optical material will be damaged by a laser
transmissive and reflective optical elements and in applications where the laser induced modification or destruction of a material is the intended outcome
Laser_damage_threshold
Diamond created by controlled processes
expansion and high optical transparency in a wide spectral range, synthetic diamond is becoming the most popular material for optical windows in high-power
Synthetic_diamond
Chemical compound
2081. S2CID 122166759. Tong, Xingcun Colin (2013). Advanced Materials for Integrated Optical Waveguides. Springer Science & Business Media. p. 357. ISBN 978-3-319-01550-7
Barium_titanate
Gem variety of corundum
windows are: Very wide optical transmission band from UV to near infrared (0.15–5.5 μm) Significantly stronger than other optical materials or standard glass
Sapphire
Research of materials
influences its mechanical, electrical, thermal, and optical behavior. In engineering practice, materials science and engineering are often described through
Materials_science
Marvin (1 March 1973). "Optical Constants of Water in the 200-nm to 200μm Wavelength Region". Applied Optics. 12 (3). Optical Society of America: 555–563
Optical properties of water and ice
Optical_properties_of_water_and_ice
Device that emits light via optical amplification
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word
Laser
Transparent variety of calcite
biological microscopy reveals material structure, and in education and research it is a practical tool to demonstrate optical principles. As a calcite, Iceland
Iceland_spar
Property in optics
a given optical medium (v), n=c/v. The refractive index determines how much the path of light is bent, or refracted, when entering a material, as described
Refractive_index
Fluoropolymer which has the highest diffuse reflectance of any known material
Three grades of Spectralon reflectance material are available: optical grade, laser grade, and space grade. Optical-grade Spectralon has a high reflectance
Spectralon
in biomedical scans and optical computing. The ease with which the chemical composition can be changed in organic materials makes the photorefractive
Organic photorefractive materials
Organic_photorefractive_materials
Uniformity in all orientations
medium, the simplest instance being free space. Optics Optical isotropy means having the same optical properties in all directions. The individual reflectance
Isotropy
Optical manufacturing and testing is the process of manufacturing and testing optical components. It spans a wide range of manufacturing procedures and
Optical manufacturing and testing
Optical_manufacturing_and_testing
Cable assembly containing one or more optical fibers that are used to carry light
cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable but containing one or more optical fibers that are used to
Fiber-optic_cable
Glass consisting of pure silica
hydroxyl [OH] groups within the material. An IR grade material typically has an [OH] content below 10 ppm. Many optical applications of fused quartz exploit
Fused_quartz
Chemical compound
K+[TiO]2+PO3−4. It is a white solid. KTP is an important nonlinear optical material that is commonly used for frequency-doubling diode-pumped solid-state
Potassium_titanyl_phosphate
Family of polymers
Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed
Polycarbonate
Chemical compound
doi:10.1002/14356007.a11_307. ISBN 3527306730. "Lithium Fluoride (LiF) Optical Material". Crystran 19. 2012. McGregor DS, Bellinger SL, Shultis JK (2013).
Lithium_fluoride
How a material interacts with light
The optical properties of a material define how it interacts with light. The optical properties of matter are studied in optical physics (a subfield of
Optical_properties
Chemical compound naturally occurring as periclase
mode from intergranular to transgranular. Pressed MgO is used as an optical material. It is transparent from 0.3 to 7 μm. The refractive index is 1.72 at
Magnesium_oxide
Highly light-absorbent surface treatment
black are in specialist optical instruments for reducing unwanted reflections. The disadvantage of this material is its low optical thickness, as it is a
Super_black
"Annealing influence over structural and optical properties of sprayed SnS thin films". Optical Materials. 35 (9): 1693–1699. Bibcode:2013OptMa..35.1693P
List of semiconductor materials
List_of_semiconductor_materials
Ceramic materials that are optically transparent
Many ceramic materials, both glassy and crystalline, have found use as optically transparent materials in various forms: bulk solid-state components (phone
Transparent_ceramics
Transparent thermoplastic, commonly called acrylic
models of gold-nib fountain pens, specifically as the cap and body material. Optical fibers made of PMMA are used by Fiber optic drone. Cast acrylic Organic
Poly(methyl_methacrylate)
Effect of a material on light
chromatic dispersion refers to bulk material dispersion, that is, the change in refractive index with optical frequency. However, in a waveguide there
Dispersion_(optics)
The optical properties of carbon nanotubes are highly relevant for materials science. The way carbon nanotubes interact with electromagnetic radiation
Optical properties of carbon nanotubes
Optical_properties_of_carbon_nanotubes
Chemical compound
properties as the β phase. Alpha barium borate, α-BaB2O4 is an optical material with a very wide optical transmission window from about 190 nm to 3500 nm. It has
Barium_borate
Synthetic garnet
especially for creating thin YIG films with excellent uniformity. Ideal for optical and microwave devices, LPE enables precise film growth on substrates. However
Yttrium_iron_garnet
Type of electromagnetic metamaterial
magnitude at optical frequencies. This includes negative permeability, despite the absence of magnetic materials. Analogous to ordinary optical material, PMs
Photonic_metamaterial
Bonding technology in display devices
cover lens, plastic, or other optical materials to the main sensor unit or each other. These adhesives improve optical characteristics and durability
Liquid optically clear adhesive
Liquid_optically_clear_adhesive
Infrared spectroscopy sampling technique
community. This evanescent effect only works if the crystal is made of an optical material with a higher refractive index than the sample being studied. Otherwise
Attenuated_total_reflectance
Chemical compound
index (1.7) and optical dispersion properties of germanium dioxide make it useful as an optical material for wide-angle lenses, in optical microscope objective
Germanium_dioxide
Branch of particle physics concerning interactions between two photons
Inside an optical material, and if the intensity of the beams is high enough, the beams may affect each other through a variety of non-linear optical effects
Two-photon_physics
Chemical compounds that absorb and re-emit light
yellow/orange materials look less so, by compensating the deficit in blue and purple light reflected by the material, with the blue and purple optical emission
Optical_brightener
Material with a negative refractive index
For example, optical and electromagnetic properties of natural materials are often altered through chemistry. With metamaterials, optical and electromagnetic
Negative-index_metamaterial
The optical materials, photonics and systems laboratory (LMOPS) gathers researchers from Lorraine university and from CentraleSupélec, in the cities of
Optical materials, photonics and systems laboratory
Optical_materials,_photonics_and_systems_laboratory
Physical structure guiding light waves
distribution (step or gradient index), and material (glass, polymer, semiconductor). The basic principles behind optical waveguides can be described using the
Waveguide_(optics)
Inorganic chemical compound of bismuth, germanium and oxygen
also refer to a different compound with formula Bi12GeO20, an electro-optical material with sillenite structure, and Bi2Ge3O9.) Bi4Ge3O12 has a cubic crystal
Bismuth_germanate
Synthetic crystalline material
perovskite-like form, and the monoclinic Y4Al2O9 (YAM). Due to its broad optical transparency, low internal stress, high hardness, chemical and heat resistance
Yttrium_aluminium_garnet
Type of lens to improve visual perception
A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors:
Corrective_lens
Method of bulk crystal growth used to obtain single crystals
substrates for the manufacture gallium nitride-based LEDs, and as a durable optical material. The method is named for Spyro Kyropoulos [Wikidata], who proposed
Kyropoulos_method
Chemical element with atomic number 32 (Ge)
transparent in the infrared wavelengths, it is an important infrared optical material that can be readily cut and polished into lenses and windows. It is
Germanium
Branch of material physics involving photoelectronic devices
electromagnetic (optical) and the electrical (electronic) states of materials. The electro-optic effect is a change in the optical properties of an optically active
Electro-optics
Chemical compound
+ H2SO4 → CaSO4(solid) + 2 HF Calcium fluoride is used to manufacture optical components such as windows and lenses, used in thermal imaging systems
Calcium_fluoride
Special lens with a conical surface
shaped distribution. They can be convex or concave and be made of any optical material. The combination with other axicons or lenses allows a wide variety
Axicon
Mirror made of dielectric materials
multiple thin layers of dielectric material, typically deposited on a substrate of glass or some other optical material. By careful choice of the type and
Dielectric_mirror
Materials engineered to have properties that have not yet been found in nature
optoelectronics, material sciences, nanoscience and semiconductor engineering. Recent developments also show promise for metamaterials in optical computing,
Metamaterial
Chemical compound
laser gain medium emitting at about 2.4 μm. It is used as an infrared optical material with a remarkably wide transmission wavelength range (0.45 μm to 21
Zinc_selenide
Calcium carbonate mineral
based on scratch hardness comparison. Large calcite crystals are used in optical equipment, and limestone composed mostly of calcite has numerous uses.
Calcite
material is the change in refractive index with the response to temperature. The coefficient is a fundamental optical property important for optical and
Thermo-optic_coefficient
British musician
was initially intended for self-publishing the duo's own Ed Rush & Optical material (a practice that is common in indie and dance music), Virus' subsequent
Optical_(musician)
Transparent optical element with flat, polished surfaces that refract light
as an optical prism. Prisms can be made from any material that is transparent to the wavelengths for which they are designed. Typical materials include
Prism_(optics)
Computer memory type used for data preservation
this method of encoding uses two optical dimensions and three spatial co-ordinates to write throughout the material, which suggested the name '5D data
5D_optical_data_storage
Luminescent substance
motor surfaces. Also, phosphor may be applied to the end of an optical fiber as an optical analog of a thermocouple.[citation needed] In these applications
Phosphor
Plastic
plastic commonly used in the manufacture of eyeglass lenses alongside the material PMMA (polymethyl methacrylate). The monomer is liquid allyl diglycol carbonate
CR-39
Type of optical device
orientation, or shape of the molecules constituting the material. Generally, a nonlinear optical material, such as ferroelectrics like lithium niobate (LiNbO3)
Electro-optic_modulator
Glass which displays different colors under different lighting conditions
multiple different colors depending on lighting conditions. One dichroic material is a modern composite non-translucent glass that is produced by stacking
Dichroic_glass
Parametric oscillator that oscillates at optical frequencies
An optical parametric oscillator (OPO) is a parametric oscillator that oscillates at optical frequencies. It converts an input laser wave (called "pump")
Optical_parametric_oscillator
Chemical compound
in the greenhouse trade and in hydroponics. Crystals of MKP are used in optical modulators and for non-linear optics such as second-harmonic generation
Monopotassium_phosphate
Content publishing on optical disks
Optical disc authoring, including CD, DVD, and Blu-ray Disc authoring, is the process of assembling source material—video, audio or other data—into the
Optical_disc_authoring
Transparent ceramic
performance. Under recommendations from Casio, the material itself has been refined for use in digital camera optical lenses by endowing it with improved transmission
Lumicera
State of matter with properties of both conventional liquids and crystals
methods, the original method was use of thermal optical microscopy, in which a small sample of the material was placed between two crossed polarizers; the
Liquid_crystal
Optically active material
This polarizer material is particularly resistant to humidity and heat. Polarizing sheets are used in liquid-crystal displays, optical microscopes and
Polaroid_(polarizer)
Technology used to provide broadband to the end consumer via fiber
A passive optical network (PON) is a fiber-optic telecommunications network that uses only unpowered devices to carry signals, as opposed to electronic
Passive_optical_network
Order of crustaceans
the original on May 25, 2020. Retrieved May 13, 2020. New type of optical material discovered in the secret language of the mantis shrimp Archived 2016-03-07
Mantis_shrimp
Hardness of Optical Materials", 3rd Europa Jupiter System Mission Instrument Workshop, ESA ESTEC. Retrieved 27 February 2024. "Specialty Optical Fibers".
Radiation effects on optical fibers
Radiation_effects_on_optical_fibers
Computer that uses photons or light waves
equivalent optical transistor is required. This is achieved by crystal optics (using materials with a non-linear refractive index). In particular, materials exist
Optical_computing
Glass containing one or more of sulfur, selenium and tellurium
Chalcogenide materials behave rather differently from oxides, in particular their lower band gaps contribute to very dissimilar optical and electrical
Chalcogenide_glass
Synthetic garnet
a Faraday rotator material with excellent transparency properties and is very resistant to laser damage. TGG can be used in optical isolators for laser
Terbium_gallium_garnet
Chemical compound
interest for optical waveguides. Tellurite glasses have also been shown to exhibit Raman gain up to 30 times that of silica, useful in optical fibre amplification
Tellurium_dioxide
Colour in living creatures caused by interference effects
surfaces that could provide brilliant colours, adaptive camouflage, efficient optical switches and low-reflectance glass. In his 1665 book Micrographia, Robert
Structural_coloration
Academic journal
passive electronic/optical materials, coatings, colloids, biomaterials and bio-interfaces, polymers, hybrid and composite materials; and friction and wear
ACS Applied Materials & Interfaces
ACS_Applied_Materials_&_Interfaces
Scientific instruments
Optical tweezers (originally called single-beam gradient force trap) are scientific instruments that use a highly focused laser beam to hold and move
Optical_tweezers
White powder insoluble in water
as a varistor, are the active material in most surge arresters. Zinc oxide is noted for its strongly nonlinear optical properties, especially in bulk
Zinc_oxide
glasses for optical use, such as the manufacture of lenses and prisms. There are many different types of glass with different compositions and optical properties
Glass_code
OPTICAL MATERIAL
OPTICAL MATERIAL
Surname or Lastname
English and German
English and German : metonymic occupational name for a glazier or glass blower, from Old English glæs ‘glass’ (akin to Glad, referring originally to the bright shine of the material), Middle High German glas.Irish and Scottish : Anglicized form of the epithet glas ‘gray’, ‘green’, ‘blue’ or any of various Gaelic surnames derived from it.German : altered form of the personal name Klass, a reduced form of Nikolaus (see Nicholas).Jewish (Ashkenazic) : ornamental name from German Glass ‘glass’, or a metonymic occupational name for a glazier or glass blower.
Girl/Female
Hindu, Indian, Malayalam, Marathi, Sanskrit
Materialistic Knowledge
Girl/Female
Hindu, Indian
Musk; A Fragrant Material
Girl/Female
Bengali, Gujarati, Hindu, Indian, Kannada, Telugu
Knowledge; Materialistic
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
A Fragrant Material
Girl/Female
Indian
Materialistic knowledge, Top level of intelligence
Surname or Lastname
English
English : occupational name for a roofer, from Old French co(u)vreur, an agent derivative of co(u)vrir ‘to cover’ (Latin cooperire). Roofing materials in the Middle Ages might be tiles (see Tyler), slates (see Slater), or thatch (see Thatcher), depending on the regional availability of suitable materials.English (of Norman origin) : occupational name for a maker of barrels and tubs, from an agent derivative of Middle English, Old French cuve ‘vat’, ‘tub’ (Late Latin cupa, of Germanic origin; compare Cooper).Americanized spelling of German Kober.
Girl/Female
Indian
A fragrant material
Girl/Female
Tamil
Chitragandha | சிதà¯à®°à®•à®‚தா
A fragrant material
Chitragandha | சிதà¯à®°à®•à®‚தா
Surname or Lastname
North German, Danish, and Dutch
North German, Danish, and Dutch : from a shortened form of the personal name Billulf, composed of the elements bil ‘sword’, ‘axe’ + wulf ‘wolf’, or some other name with bil as the first element. For German, however, the most likely source is Pille, a French Huguenot name from the Dauphiné.English : variant spelling of Pill 2.French : habitational name from any of various minor places in northern France, so named from Old French pile, Latin pila, ‘pillar’, ‘column’. In Middle French pile denoted a trough used for crushing or pounding various materials, such as lime, and in some cases the surname may have arisen as a metonymic occupational name for someone engaged in such work.
Girl/Female
Tamil
Chithragandha | சிதà¯à®°à®•à®‚தா
A fragrant material
Chithragandha | சிதà¯à®°à®•à®‚தா
Surname or Lastname
English
English : nickname for a tall thin man, from Middle English, Old French cane ‘cane’, ‘reed’ (Latin canna). It may also be a topographic name for someone who lived in a damp area overgrown with reeds, or a metonymic occupational name for someone who gathered reeds, which were widely used in the Middle Ages as a floor covering, as roofing material, and for weaving small baskets.Southern Italian : either a habitational name from a place named Canè, in Bescia and Belluna, or more likely an occupational name for a basket maker or the like, from Greek kanna ‘reed’ + the occupational suffix -(e)as.French : Norman and Picard variant of chane a term denoting a particular type of elongated pitcher (ultimately from Latin canna ‘reed’), hence possibly a metonymic occupational name for a potter who specialized in making such jugs, or a nickname for someone who resembled one.Possibly an Americanized spelling of German Köhn (see Kuehn).
Surname or Lastname
English
English : presumably an occupational name for someone who sold damask, a richly woven material of a kind originally made in Damascus. The English word also came to denote a rich pink color, and it is possible that the surname arose as a nickname with reference to someone’s complexion.
Girl/Female
Afghan, Arabic, Indian, Iranian, Latin, Muslim, Parsi, Sindhi
Dry Earth; Detached; Free of Material Things; Noble; Freedom; Princess
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : habitational name from Sai in Orne or Say in Indre, perhaps so called from a Gaulish personal name Saius + the Latin locative suffix -acum.English : metonymic occupational name for a maker or seller of say, a kind of finely textured cloth, Middle English say (from Old French saie, Latin saga, plural of sagum ‘military cloak’). In some instances the surname may have arisen from a nickname for an habitual wearer of clothes made of this material.Southern French : topographic name from saix ‘rock’ (Latin saxum), or a habitational name from a place named with this word, for example, Say in Loire, Saix in Tarn and Vienne, Le Saix in Hautes-Alpes, or Les Saix in Isère.William Say of Bristol, England, was a member of the Society of Friends who settled in America toward the close of the 17th century. His descendant Thomas Say (1787–1834) of Philadelphia is known as the father of descriptive entomology in America.
Girl/Female
Arabic, Assamese, Bengali, Celebrity, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim, Oriya, Sanskrit, Tamil, Telugu
Musk; A Fragrant Material; Earth; Scented with Musk; Scented; Fragrant
Girl/Female
Indian
Materialistic knowledge, Top level of intelligence
Girl/Female
Tamil
Materialistic knowledge, Top level of intelligence
Girl/Female
Indian
Optional
Girl/Female
Tamil
Materialistic knowledge, Top level of intelligence
OPTICAL MATERIAL
OPTICAL MATERIAL
Girl/Female
British, Christian, English, German, Hindu, Indian, Jamaican, Latin, Marathi
Form of Drew; Sturdy; Fruitful
Boy/Male
Indian, Sanskrit
Distilling Nectar; Moon
Surname or Lastname
English
English : variant of Osborne.
Female
English
Feminine form of English Thomas, THOMASINE means "twin."
Boy/Male
Muslim
Power of Allah
Boy/Male
Welsh
Lives in the house by the rock.
Girl/Female
Tamil
The wave
Boy/Male
Muslim
Self respecting
Boy/Male
Hindu, Indian
Beautiful
Boy/Male
Tamil
A learned Man
OPTICAL MATERIAL
OPTICAL MATERIAL
OPTICAL MATERIAL
OPTICAL MATERIAL
OPTICAL MATERIAL
a.
Of or pertaining to vision or sight.
n.
Of or pertaining to the science of vision; optical.
n.
Of or pertaining to a place; limited; logical application; as, a topical remedy; a topical claim or privilege.
a.
Relating to the science of optics; as, optical works.
n.
The space covered by an optical instrument at one view.
n.
An optical toy similar to the phenakistoscope. See Phenakistoscope.
n.
An optical glass; a telescope.
a.
Alt. of Optical
n.
An optical glass that is convex on both sides.
a.
Topical.
a.
Expressed in metrical form; exhibiting the imaginative or the rhythmical quality of poetry; as, a poetical composition; poetical prose.
adv.
By optics or sight; with reference to optics.
a.
One skilled in optics.
a.
Belonging to, or consisting of, bark or rind; resembling bark or rind; external; outer; superficial; as, the cortical substance of the kidney.
a.
Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory; as, optional studies; it is optional with you to go or stay.
a.
One who deals in optical glasses and instruments.
a.
Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye.
a.
Of or pertaining to a vortex or vortexes; resembling a vortex in form or motion; whirling; as, a vortical motion.
n.
An instrument for showing the optical effects of color.
n.
A reflecting optical glass or instrument; a mirror.