Search references for TL. Phrases containing TL
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Topics referred to by the same term
Look up TL or tl in Wiktionary, the free dictionary. TL or Tl may refer to: Teens' love, Japanese erotic fiction marketed towards women Télé Liban, a
TL
"too long; didn't read"; Internet comment
TL;DR or tl;dr, short for "too long; didn't read", is Internet slang, often used to introduce a summary of an online post or news article. It is also
TL;DR
Entry-level luxury car by Acura (1996–2014)
The Acura TL is an entry-level luxury sedan that was manufactured by Acura, the luxury division of Honda. It was introduced in 1995 for the 1996 model
Acura_TL
Internet country code top-level domain for Timor-Leste
.tl is the current country code top-level domain (ccTLD) for Timor-Leste. It is administered through the Council of Country Code Administrators (CoCCA)
.tl
Chemical element with atomic number 81 (Tl)
73 Tl 3 + + 3 e − ⟷ Tl − 0.336 Tl + e − ⟷ Tl {\displaystyle {\begin{aligned}+0.73\ &{\ce {Tl^3+ + 3e- <-> Tl}}\\-0.336\ &{\ce {Tl + e- <-> Tl}}\end{aligned}}}
Thallium
Czech aircraft manufacturer
TL-Ultralight is an aircraft manufacturer based in Hradec Králové, Czech Republic. The company started out as a builder of ultralight trikes and now specializes
TL-Ultralight
TL 9000 is a quality management system standard designed by the QuEST Forum in 1998. It was created to focus on supply chain directives throughout the
TL_9000
Italian military artillery tractor
The TL.37 was an Italian military artillery tractor of World War II. It was manufactured by SPA (Società Piemontese Automobili), an Italian car maker that
TL.37
Motor vehicle
The Bedford TL is a truck manufactured by Bedford. Launched in June 1980, the TL was intended to complement the Bedford TK, on which it was heavily based
Bedford_TL
Chinese air-to-ground missile
The Tianlei (TL; Chinese: 天雷; lit. 'Sky Thunder') is a series of Chinese air-to-ground missile developed by China Aerospace Science and Technology Corporation
TL_(missile)
Consonantal sound
languages. The symbol in the International Phonetic Alphabet is ⟨t͡ɬ⟩ (often simplified to ⟨tɬ⟩), and in Americanist phonetic notation it is ⟨ƛ⟩ (barred lambda)
Voiceless alveolar lateral affricate
Voiceless_alveolar_lateral_affricate
Pharmaceutical compound
TL 2636 (M-125) is an opioid drug derived from thebaine, one of the bridged oripavine family of drugs known as the Bentley compounds which includes drugs
TL_2636
Anti-ship / air-to-surface missiles
Hongdu Aviation Industry Corporation. The export version of YJ-9 is called TL-10 (Chinese: 天龙-10; lit. 'Sky Dragon-10') anti-ship missile by Hongdu, or
TL-10
Chinese anti-radiation missile
The TL-30 (Tianlong-30; Chinese: 天龙-30) is an anti-radiation loitering missile built by Hongdu Aviation Industry Corporation. At Zhuhai Airshow 2022, AVIC
TL-30
Chinese air-to-surface missile
Aero-Technology Import & Export Corporation (CATIC). Its export version is called TL-7 and TL-17. KD-88 is derived from YJ-83 missile. KD-88 uses the body of YJ-83
KD-88
Ultralight TL-22 Duo TL Ultralight TL-32 Typhoon TL Ultralight TL-96 Star TL Ultralight TL-132 Condor TL Ultralight TL-232 Condor Plus TL Ultralight TL-232 Power
List_of_aircraft_(Tl)
Municipality in Southwest Finland, Finland
Koski Tl (Finnish pronunciation: [ˈkoski]; Swedish: Koskis) is a municipality of Finland. It is located in the Southwest Finland region and was part of
Koski_Tl
Anti-ship / air-to-surface missiles
The TL-6 (Chinese: 天龙-6; lit. 'Sky Dragon') is an anti-ship missile developed by Hongdu Aviation Industry Group. The missile was marketed via China National
TL-6
Flashlight used by the US Army and Marines
States military since the Vietnam War. A development of the World War II-era TL-122 flashlight series, the MX-991/U flashlight is currently produced by Fulton
MX991/U_Flashlight
Overview of the history of the banknotes issued by the Republic of Turkey
notes for the Republic of Turkey in denominations of TL 1, TL 5, TL 10, TL 50, TL 100, TL 500 and TL 1,000. These were the last notes printed with both
Banknotes_of_Turkey
Czech ultralight aircraft
The TL Ultralight TL-96 Star is a single-engine, side-by-side configuration two seat ultralight, designed in the Czech Republic in the 1990s. More than
TL_Ultralight_TL-96_Star
Compact car built from 1961 to 1973
Notchback were also built, but never entered production. The Fastback, or TL version, a fastback coupé, arrived in August 1965, along with the 1600 engine
Volkswagen_Type_3
American singer
TL Forsberg (born 8 September [year missing] in Nova Scotia, Canada) is a Canadian hard of hearing singer, songwriter and actress. She is a graduate of
TL_Forsberg
Public high school in Anderson, South Carolina, United States
principal Sheila Hilton, who retired. In 2019, Tobin retired to be replaced by T.L. Hanna graduate, Walter Mayfield. In 1999, the school was named "Palmetto's
T._L._Hanna_High_School
American Pentecostal preacher and gospel musician (born 1944)
Jr. (born January 13, 1944), known professionally as Pastor T.L. Barrett and Rev. T.L. Barrett, is an American Pentecostal preacher and gospel musician
T._L._Barrett
American pastor (1923–2013)
Tommy Lee "T.L." Osborn (December 23, 1923 – February 14, 2013) was an American Pentecostal televangelist, singer, author and teacher whose Christian
T._L._Osborn
Currency of Turkey
TL 9 1970: US$1 = TL 11.30 1975: US$1 = TL 14.40 1980: US$1 = TL 80 1985: US$1 = TL 500 1990: US$1 = TL 2,500 1995: US$1 = TL 43,000 2000: US$1 = TL 620
Turkish_lira
The TL Ultralight TL-132 Condor and TL-232 Condor Plus are single engine, highwing ultralight aircraft designed and built in the Czech Republic in the
TL_Ultralight_Condor
Chemical compound
TL-599, also known as SB-8, is an extremely potent carbamate class acetylcholinesterase inhibitor. Neostigmine Miotine T-1123 T-1152 T-1194 TL-1238 Physostigmine
TL-599
Digital mirrorless interchangeable lens camera
The Leica TL is a digital mirrorless interchangeable lens camera announced by Leica Camera in November, 2016. It is the successor model of the Leica T
Leica_TL
2023 video game
South Korea closed beta took place in 2016. NCSoft renamed the game Project TL in 2017 and Throne and Liberty in 2022. The game has suffered from numerous
Throne_and_Liberty
Tabular arrangement of the chemical elements
Cs–Ba have 1–2 valence electrons; La–Yb have 3–16; Lu–Hg have 3–12; and Tl–Rn have 3–8. However, towards the right side of the d- and f-blocks, the theoretical
Periodic_table
Motor vehicle
The Latil TL, TL being an initialism (French: tracteur léger, lit. 'light tractor'), is a multipurpose all-wheel drive tractor produced by the French manufacturer
Latil_TL
Czech ultralight aircraft
The TL-Ultralight Stream is a Czech ultralight aircraft, designed and produced by TL-Ultralight of Hradec Králové, introduced at the AERO Friedrichshafen
TL-Ultralight_Stream
Luxury and performance vehicle brand by Honda
sedan, the RSX and TSX, respectively. Type-S versions of the RSX, CL, and TL were added to the brand's lineup during that decade. Acura's 2005 RL flagship
Acura
Series of film and digital cameras and lenses
standard lens was the 80mm f/2.8 N or the 80mm f/1.9 N. The Mamiya 645 Pro-TL was manufactured from 1997 to 2006 and is functionally similar to the 645
Mamiya_645
English broadcaster and natural historian (born 1926)
from the original on 5 September 2021. Retrieved 29 August 2019. Couvreur TL, Niangadouma R, Sonké B, Sauquet H (2015). "Sirdavidia, an extraordinary new
David_Attenborough
IBM PC compatible home computer system
1000 TL/2, XT IDE controllers are integrated onto the motherboard. However, these are incompatible with common AT IDE hard drives. The TL/2, TL/3, RL
Tandy_1000
The Birdman TL-1 was an extremely minimalist aircraft sold in kit form in the United States in the mid-1970s for US$1,395. The TL-1's fuselage is nothing
Birdman_TL-1
Chemical compound and chemical warfare nerve agent
Phosphonofluoridic acid, P-methyl-, 1-methylethyl ester EA-1208 TL-1618 T-144 Identifiers CAS Number 107-44-8 Y 3D model (JSmol) Interactive
Sarin
Chemical compound
T-1194, also known as TL-1323, is an extremely toxic carbamate nerve agent. T-1194 is the N-methylcarbamate ester of edrophonium iodide. The bromide salt
T-1194
Ultralight aircraft
The TL Ultralight TL-3000 Sirius is a conventional single engine high wing ultralight and light-sport aircraft seating two side-by-side. It was designed
TL_Ultralight_TL-3000_Sirius
Mid-size pickup truck
produced for export markets. In India, the 4WD version was sold as the Tata TL, the rear-wheel drive version continued as the Tata 207. In 2008, export to
Tata_Telcoline
Chemical compound
TL-1238 (Substance 3393) is an extremely potent carbamate acetylcholinesterase inhibitor. It has been shown to be more potent than the parent compound
TL-1238
Compact luxury sedan by Acura (2015–2025)
Honda, since 2014 for the 2015 model year. It is the successor to both the TL and TSX models. The discontinuation of the RLX after the 2020 model year left
Acura_TLX
TL Tradewinds Company Limited (commonly known as TL), formerly TL Tradewinds Ltd., Part., is a Thailand food company established in 2011 and headquartered
TL_Tradewinds
Japanese erotica fiction marketed towards women
Teens' love (TL) (Japanese: ティーンズラブ) is a subgenre of Japanese women's comics that has been established since the 2000s in a push to normalize eroticism
Teens'_love
Austronesian language spoken in the Philippines
Philippines) Regulated by Komisyon sa Wikang Filipino Language codes ISO 639-1 tl ISO 639-2 tgl ISO 639-3 tgl Glottolog taga1280 Tagalogic taga1269 Tagalog-Filipino
Tagalog_language
Tanzanian conglomerate
The MeTL Group (Mohammed Enterprises Tanzania Limited) is a Tanzanian family-owned conglomerate and one of the country's largest companies. Headquartered
MeTL_Group
Country in Southeast Asia
short form of the name is "Timor-Leste", and it uses the ISO codes TLS and TL. Cultural remains at Jerimalai on the eastern tip of Timor-Leste have been
Timor-Leste
Part of the female reproductive tract
doi:10.3389/fphys.2015.00081. ISSN 1664-042X. PMC 4373506. PMID 25859220. King TL, Brucker MC (2010). Pharmacology for Women's Health. Jones & Bartlett Publishers
Vagina
American academic
Taylor, T.L. (2018). Watch Me Play: Twitch and the Rise of Game Live Streaming. Princeton, NJ: Princeton University Press. Book home page. Taylor, T.L. (2012)
T._L._Taylor
Overview of the history of the coins issued by the Republic of Turkey
aluminium TL 1, TL 5 and TL 10 coins were introduced. Higher denominations followed: TL 20, TL 50 and TL 100 in 1984, TL 25 in 1985, TL 500 in 1988, TL 1,000
Coins_of_Turkey
Radiometric tool for geochronology
Thermoluminescence dating (TL) is the determination, by means of measuring the accumulated radiation dose, of the time elapsed since material containing
Thermoluminescence_dating
Entry for Timor-Leste (East Timor) in ISO 3166-2
ISO 3166-2:TL is the entry for Timor-Leste (East Timor) in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization
ISO_3166-2:TL
Australian academic
T. L. Burton (Thomas Lingen (Tom) Burton; born 1944) is an emeritus professor at the University of Adelaide and a reputed scholar of medieval English literature
T._L._Burton
Luxury mid-size coupe by Acura (1997–2003)
plant in East Liberty, Ohio with the Honda Civic. The second generation CL, TL and the Honda Accord upon which the Acura CLs were based, are manufactured
Acura_CL
Infectious disease
Retrieved 11 June 2025. Cegielski P, Nunn P, Kurbatova EV, Weyer K, Dalton TL, Wares DF, et al. (November 2012). "Challenges and controversies in defining
Tuberculosis
Chemical compound
formula TlOH. It is a hydroxide of thallium, with thallium in oxidation state +1. It is a thallium(I) salt of water. It consists of thallium(I) cations Tl+ and
Thallium(I)_hydroxide
Use of Ethernet between a telecommunications company and a customer's premises
twisted pair). 2BASE-TL – defined in clauses 61 and 63. Full-duplex long-reach point-to-point link over voice-grade copper wiring. 2BASE-TL PHY can deliver
Ethernet_in_the_first_mile
Chemical compound
diethylmethyl amine. The chloride and methylsulfate salt of T-1123 is TL-1299 and TL-1317, respectively. T-1123 can be produced from m-diethylaminophenol
T-1123
Form of dating how long ago mineral grains had been last exposed to sunlight or heating
photoluminescence (IR-PL) and thermoluminescence dating (TL). "Optical dating" typically refers to OSL and IRSL, but not TL. The age range of luminescence dating methods
Luminescence_dating
Chemical compound
formula TlI3. Unlike the other thallium trihalides, which contain thallium(III), TlI3 is actually a thallium(I) salt containing thallium(I) cations Tl+ and
Thallium_triiodide
Chemical compound
TL-301 is a type of nitrogen mustard. HN1 (nitrogen mustard) HN2 (nitrogen mustard) HN3 (nitrogen mustard) "Chemical Warfare Agents, and Related Chemical
TL-301
System of phonetic notation
common with: Affricates, such as the Americanist barred lambda ⟨ƛ⟩ for [t͜ɬ] or ⟨č⟩ for [t͜ʃ ]. The Karlgren letters for Chinese vowels, ⟨ɿ, ʅ , ʮ, ʯ ⟩
International Phonetic Alphabet
International_Phonetic_Alphabet
Liquid additive
Group: G11: VW TL 774 C G12 / G12+: VW TL 774 D/F G12++: VW TL 774 G G13: VW TL 774 J G12evo: VW TL 774 L BASF: Glysantin G48: matches VW TL 774-C Glysantin
Antifreeze
Type of motorcycle
launched in 1998, one year after its sibling, the TL1000S. Unlike the TL-S, the TL-R was designed to compete in the World and American Superbike Championships
Suzuki_TL1000R
State prison in West Livingston, Texas formerly known as the Terrell Unit
Allan B. Polunsky Unit (TL, formerly the Terrell Unit) is a prison in West Livingston, unincorporated Polk County, Texas, United States, located approximately
Allan_B._Polunsky_Unit
High-performance division of Acura
offered as an A-Spec variant was the 2003 Acura TL in Canada and the 2002 Acura RSX in the US. The Acura TL Type-S was introduced in 2001 for the 2002 model
Acura A-Spec and Type-S models
Acura_A-Spec_and_Type-S_models
Trait that determines an organism's sexually reproductive function
PMID 23970358. Bachtrog D, Mank JE, Peichel CL, Kirkpatrick M, Otto SP, Ashman TL, et al. (July 2014). "Sex determination: why so many ways of doing it?". PLOS
Biological_sex
Swiss transport company
often abbreviated simply to tl, are the main operator of public transport in Lausanne and the wider agglomeration. As of 2012, TL operates a network of 10
Transports publics de la région lausannoise
Transports_publics_de_la_région_lausannoise
Chemical compound
Dimefox, also known as TL-792 or T-2002, is a highly toxic organophosphate insecticide. In its pure form it is a colourless liquid with a fishy odour.
Dimefox
Spanish language American cable television network
Univision tlnovelas is a Spanish language American cable television network dedicated to broadcasting telenovelas. It is owned by TelevisaUnivision. The
Univision_Tlnovelas
for 2015. Leica TL – The Leica TL is the successor of the Leica T (Typ 701). Leica TL2 – The Leica TL2 is the successor of the Leica TL. Leica CL – The
List_of_Leica_Camera_models
American professional wrestler (born 1960)
Darrell W. Anthony (born April 12, 1960) is an American retired professional wrestler, also known by his ring name Dirty White Boy. He wrestled in NWA
Tony_Anthony
Turkish game show
cases, all held by models, containing prizes from 1 TL to 1,000,000 TL and the player won 125,000 TL. Although two different versions of Deal or No Deal
Var_mısın?_Yok_musun?
American novelist (1915–1985)
Fiction Encyclopedia, The. London: Roxby Press Limited. ISBN 0-385-14743-0. "T.L. Sherred". Alpha Ralpha Boulevard. Archived from the original on 2006-06-18
T._L._Sherred
Nerve agent
Ethylsarin (GE), also known as EA-1209, TL-1620 or T-2109, is an organophosphate nerve agent of the G-series. It is the ethylphosphonofluoridate analog
Ethylsarin
Family of high-temperature superconductors
Tl2Ba2CuO6 (Tl-2201), there is one CuO2 layer with the stacking sequence (Tl–O) (Tl–O) (Ba–O) (Cu–O) (Ba–O) (Tl–O) (Tl–O). In Tl2Ba2CaCu2O8 (Tl-2212), there
Thallium barium calcium copper oxide
Thallium_barium_calcium_copper_oxide
Precision-guided bomb
'Lambda Boötis'), TD (Chinese: 天罡; pinyin: tiān gāng; lit. 'Big Dipper'), and TL (Chinese: 天雷; pinyin: tiān léi; lit. 'Sky Thunder') series of guided bombs
TG_PGB
American hip hop group
California in 1989. Consisting of James "Jay Tee" Trujillo and Timothy "TL" Lyon, they are best known for the 1992 hit single "Back to the Hotel", the
N2Deep
Sound law in Uto-Aztecan linguistics
languages of the phoneme /tɬ/, which is not found in any of the other languages of the Uto-Aztecan family. The existence of /tɬ/ in Nahuatl had puzzled
Whorf's_law
the EBU: Algeria – ENRS, EPTV, TDA Egypt – ERTU Jordan – JRTV Lebanon – TL Libya – LNC Tunisia – RT, TT (RTT) Vatican City – RV In 1977, Tunisia's former
List of countries in the Eurovision Song Contest
List_of_countries_in_the_Eurovision_Song_Contest
Chemical compound
Cyanodimethylaminoethoxyphosphine oxide; Dimethylaminoethodycyanophosphine oxide; EA-1205; TL-1578 Identifiers CAS Number 77-81-6 Y 3D model (JSmol) Interactive image ChEMBL
Tabun_(nerve_agent)
Motor vehicle
rear side windows. Some markets show the 17 with the rectangular lights for TL versions. The Renault 15 and 17 were presented at the Paris Motor Show in
Renault_R15_and_R17
Consonantal sound
the International Phonetic Alphabet that represents this sound is ⟨t͡ɬʼ⟩ (or ⟨tɬʼ⟩). Features of an alveolar lateral ejective affricate: Its manner of
Alveolar lateral ejective affricate
Alveolar_lateral_ejective_affricate
Condition involving social and behavioral differences
(7413): 488–493. doi:10.1136/bmj.327.7413.488. PMC 188387. PMID 12946972. Arndt TL, Stodgell CJ, Rodier PM (2005). "The teratology of autism". International
Autism
Topics referred to by the same term
TL6 may refer to: TL-6 (Tian Long 6; Sky Dragon 6), a Chinese anti-ship from HAIG TL-6 (Tianlong 6; Sky Dragon 6), a Chinese air defense missile from AVIC1
TL6
Position of an organism in a food chain
of the trophic level, TL, for any consumer species is: T L i = 1 + ∑ j ( T L j ⋅ D C i j ) {\displaystyle TL_{i}=1+\sum _{j}(TL_{j}\cdot DC_{ij})\!} where
Trophic_level
2012 Android smartphone
Sony Xperia T (renamed Sony Xperia TL in the United States) is an Android smartphone manufactured by Sony Mobile. Introduced on 29 August 2012, it is Sony
Sony_Xperia_T
joinLeftAVL(TL, k, TR) /* symmetric to joinRightAVL */ function join(TL, k, TR) if h(TL) > h(TR) + 1 return joinRightAVL(TL, k, TR) else if h(TR) > h(TL) + 1
Join-based_tree_algorithms
Academic journal
Trade, Law and Development (TL&D) is a biannual, student-run, academic journal published by National Law University, Jodhpur, India (NLU, Jodhpur). It
Trade,_Law_and_Development
Trans-Neptunian object
(15874) 1996 TL66 is a trans-Neptunian object of the scattered disc orbiting in the outermost region of the Solar System. The Spitzer Space Telescope has
(15874)_1996_TL66
Czech ultralight trike
The TL Ultralight TL-22 Duo is a Czech ultralight trike that was designed and produced by TL Ultralight of Hradec Králové. Production has been completed
TL_Ultralight_TL-22_Duo
Refrigeration system that cools to below 120 K
(all at the low temperature TL). Left and right the thermal contact with the surroundings at the temperatures Ta and TL is supposed to be perfect so
Cryocooler
Secure lockable box used for securing valuable objects
the TL-15 test, plus more aggressive tools including cutting wheels and power saws. TL-30x6 - This is safe can withstand the same assaults as the TL-30
Safe
Chemical compound
Dicyclohexyl phosphorofluoridate (DCFP), also known as TL-941 or T-1840, is an extremely toxic organophosphorus compound with powerful anticholinesterase
Dicyclohexyl phosphorofluoridate
Dicyclohexyl_phosphorofluoridate
post-equipped hang glider-style wing for two-place trikes, while the Profi TL is a "topless" design, lacking the king post and using streamlined lower lift
Aeros_Profi
Reciprocating internal combustion engine
2017-09-09. "2007 Acura TL and TL Type-S News | Cars.com". Archived from the original on 2017-09-09. Retrieved 2017-09-08. "2007 Acura TL – Specifications"
Honda_J_engine
Chemical compound
also known as thallous chloride, is a chemical compound with the formula TlCl. This colourless salt is an intermediate in the isolation of thallium from
Thallium(I)_chloride
TL
TL
Surname or Lastname
English
English : variant of Godley.Probably also an Americanized spelling of South German and Swiss German Gütle (or the variants Güttly and Gütler), a status name for a smallholder (see Goodlin).
Female
Czechoslovakian
, light.
Surname or Lastname
English
English : nickname from Middle English bold ‘courageous’, ‘daring’ (Old English b(e)ald, cognate with Old High German bald). In some cases it may derive from an Old English personal name (see Bald).English : topographic name for someone who lived or worked at the main house in a settlement, from Old English bold, the usual West Midland and northwestern form of Old English bÅðl, bÅtl ‘dwelling house’, ‘hall’.English : habitational name for someone from Bold in Lancashire, which is named with Old English bold ‘dwelling’, as in 2 above.German : from the Germanic personal name Baldo, a short form of the various compound names with the element bald ‘bold’, notably Baldwin in the north, and Reinbold in the south.Swedish : probably of German origin.
Surname or Lastname
English
English : possibly from an unattested Old English personal name, e.g. Wihtling or Hwītling.English : alternatively, a habitational name from Whitlinge, in Worcestershire, named from Old English hwīt ‘white’ + hlinc ‘ridge’.
Surname or Lastname
English
English : from a variant of the personal name Julian.English : habitational name from either of two places in North Yorkshire, Gilling East and Gilling West, named in Old English as ‘(settlement of) the people (Old English ingas) of a man called Ḡthia or Gētla’.
Surname or Lastname
English (Northumberland)
English (Northumberland) : habitational name from a place in the foothills of the Cheviots named Harbottle, from Old English hÌ„ra ‘hireling’ (a derivative of hÌ„r ‘wages’, ‘reward’) + bÅtl ‘dwelling’.
TL
TL
Boy/Male
Hindu, Indian, Marathi
Happy; Joyful; Glad
Girl/Female
Hindu, Indian
God's Obligation; Gift
Male
Irish
Irish Gaelic form of Old Norse SumarlÃðr, SOMHAIRLE means "summer traveler."
Male
English
Variant spelling of Middle English Alvred, ALURED means "elf counsel."
Boy/Male
Indian
Fragant
Girl/Female
Biblical
Loitering, hindering.
Girl/Female
Australian, Gaelic, Hebrew, Irish, Netherlands, Swedish
Strength; Power; To Help; Exalted One
Girl/Female
Arabic
Drawing
Girl/Female
Arabic, Muslim, Sindhi
An Early Philanthropic Woman of Damascus who Gave a Lot in Charity
Boy/Male
Greek
Farmer.
TL
TL
TL
TL
TL
n.
A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.