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licensed publishers for the GURPS role-playing game. GURPS Basic Set: Characters GURPS Basic Set: Campaigns GURPS GM's Screen GURPS for Dummies by Adam Griffith
List_of_GURPS_books
Role-playing game supplement
one of the broad genre books that was published after the 1986 GURPS Basic Set. GURPS Space was designed by Steve Jackson and William Barton, and published
GURPS_Space
Role-playing game supplement
role-playing game GURPS Space, which uses the rules of GURPS (Generic Universal Role-Playing System). GURPS Space Atlas, the first in a series of "encyclopediae"
GURPS_Space_Atlas
sourcebooks including the GURPS Space Atlases (1988-1991), GURPS Space Bestiary (1990), and GURPS Aliens (1990). GURPS Space Adventures used this science-fiction
GURPS_Space_Adventures
Tabletop role-playing game system
number of advantages, disadvantages, perks, quirks and skills. GURPS consists of a GURPS Basic Set, which contains the core rules required to run most
GURPS
Supplement for the Roleplaying Game GURPS published by Steve Jackson Games
noted that the "GURPS Space Atlases (1988–1991), GURPS Space Bestiary (1990) and GURPS Aliens (1990) helped fill out the GURPS Space world." In the February
GURPS_Space_Atlas_4
Topics referred to by the same term
comic book series Space Adventures Cobra Space Adventures (comics), a U.S. anthology comic book series GURPS Space Adventures, the Space Adventures module
Space_Adventure
Role-playing game adventure
1989 for either the horror role-playing game GURPS Horror or the science fiction role-playing game GURPS Space. Flight 13 has a Fifties-style B movie setting
Flight_13
Transhumanist tabletop role-playing game
the GURPS Lite, later publications such as Transhuman Space by David Pulver were labelled simply "Powered by GURPS" without using the name "GURPS" in
Transhuman_Space
GURPS Lensman is a 1993 role-playing supplement for GURPS published by Steve Jackson Games. GURPS Lensman is a supplement in which the world of the Lensman
GURPS_Lensman
Tabletop role-playing game publication
GURPS Basic Set is a role playing game publication written by Steve Jackson, Sean M. Punch, and David L. Pulver. The first edition GURPS Basic Set box
GURPS_Basic_Set
Tabletop role-playing game source book
GURPS Fantasy is a Genre Toolkit source book which was first designed by Steve Jackson and published by Steve Jackson Games in 1986 for the GURPS role-playing
GURPS_Fantasy
Tabletop role-playing game
edition was published in 1989. GURPS Supers is a supplement of rules for comic-book superhero characters and campaigns for GURPS. The first edition book includes
GURPS_Supers
Type of map projection
for the Cosmic Background Explorer project. The Traveller (1977) and GURPS Space (1987) role-playing games use an icosahedral projection for planetary
Polyhedral_map_projection
Science fiction role-playing game
GURPS quickly followed, including GURPS Fantasy, GURPS Horror, and GURPS Space. Stefan Jones created Unnight as a planetary setting for GURPS Space,
Unnight
American novelist (born 1972)
– GURPS Casey & Andy". www.warehouse23.com. Archived from the original on September 28, 2020. Retrieved October 26, 2020. "Daily Illuminator: GURPS Casey
Andy_Weir
Tabletop role-playing game
setting from the original Traveller using the GURPS rule system. Loren Wiseman wrote the core book for GURPS Traveller and served as line editor. Steve Jackson
GURPS_Traveller
Tabletop role-playing game sourcebook
use with GURPS Space, GURPS Horror, or GURPS Supers. GURPS Aliens is a GURPS supplement describing 28 alien races for use with GURPS Space, including the
GURPS_Aliens
GURPS Autoduel is the GURPS genre toolkit book which details the post-apocalyptic world of one of SJG's other popular games, Car Wars. The initial publication
GURPS_Autoduel
Tabletop science fiction role-playing game
Designed by Loren K. Wiseman and published in 1998, GURPS Traveller uses the third edition of the GURPS system. This takes place in an alternative timeline
Traveller_(role-playing_game)
Topics referred to by the same term
Parahumans, a character class in the GURPS-based tabletop RPG Transhuman Space Parahuman ability class in GURPS Infinite Worlds tabletop RPG platform
Parahuman
Science fiction role-playing game
setting to a science fiction role-playing game, using GURPS (Generic Universal Role-Playing System). GURPS Uplift is based on the fictional universe envisioned
GURPS_Uplift
of Dungeons & Dragons video games. Video games based on GURPS: Fallout (1997) used the GURPS system for most of its development until a creative difference
List of video games based on tabletop games
List_of_video_games_based_on_tabletop_games
American game designer (born 1953)
and play level. Jackson announced GURPS in 1983, although his time spent managing magazines delayed development of GURPS until 1984, making the combat system
Steve Jackson (American game designer)
Steve_Jackson_(American_game_designer)
Literary genre
original on 5 March 2016. Retrieved 20 February 2020. Pulver, David L. (1998). GURPS Bio-Tech. Steve Jackson Games. ISBN 978-1-55634-336-0. Paul Taylor (June
Science_fiction
GURPS Update is a supplement published by Steve Jackson Games in 1989 for the GURPS (Generic Universal RolePlaying System) role-playing system. In 1989
GURPS_Update
Canadian game designer
simplified for GURPS Traveller (especially GURPS Traveller: Starships and GURPS Traveller: Ground Forces) and GURPS World War 2 (including GURPS WW2: Motorpool)
David_L._Pulver
Implausible plot device in fiction
Retrieved 2008-10-08. Matt Riggsby (November 18, 2005). "Alien Space Bats for GURPS Fourth Edition". Pyramid. Retrieved 19 December 2008. https://groups
Alien_space_bats
Sourcebook for GURPS game system
GURPS Humanx is a sourcebook for GURPS. GURPS Humanx is a GURPS supplement of science-fiction role-playing rules set in an interstellar commonwealth of
GURPS_Humanx
GURPS Prime Directive is a sourcebook for GURPS, first published in 2002. It is based on previous RPG setting set in the Star Fleet Universe, based in
GURPS_Prime_Directive
Science fiction role-playing game adventure
Stardemon is a science fiction role-playing game adventure for GURPS Space published by Steve Jackson Games (SJG) in 1989. Stardemon is an adventure in
Stardemon
Tabletop role-playing game
Eventually, they approached Steve Jackson Games to licence Powered by GURPS. The core rulebook, D20 Klingons, D20 Romulans (no D20M as of Aug 2011)
Prime Directive (role-playing game)
Prime_Directive_(role-playing_game)
Alternity (1998-2000) TSR GURPS Transhuman Space (2002) Steve Jackson Games - Transhumanist Space Opera. D6 Space Opera / D6 Space (2003/2004–present) West
List_of_space_opera_media
Role-playing game sourcebook
published additional releases in the genre, compatible with GURPS Fourth Edition. GURPS is the Generic Universal RolePlaying System, a tabletop role-playing
GURPS_Steampunk
Canadian artist
Mercenaries, Spies & Private Eyes, Traveller, DCC RPG, Immortal, GURPS, Space Opera, Space: 1889, Lejentia Campaigns, Grid Iron, Lost Worlds, the Powerz
Steve_Crompton
American writer (born 1959)
is included in the excerpt at Steve Jackson Games. Out-Takes from GURPS Lensman GURPS Lensman, p. 4. Personal correspondence 15 April 2006. Sean Barrett
Sean_Barrett_(writer)
modern-day game in the same setting, Wild Talents. GURPS International Super Teams is the house setting for GURPS Supers Heroes Unlimited, Villains Unlimited
List_of_campaign_settings
Role-playing game supplement
GURPS Planet Krishna is a role-playing game supplement published by Steve Jackson Games (SJG) in 1997 that helps a gamemaster design a GURPS (Generic Universal
GURPS_Planet_Krishna
Card game
role-playing game modules for its GURPS system, including GURPS Illuminati (1992), GURPS Illuminati University (1995), and GURPS Warehouse 23. SJG also released
Illuminati_(game)
Triumphant GURPS Conan for the GURPS roleplaying system was produced in 1989 by Steve Jackson Games. The other GURPS Conan books were GURPS solo adventures
List of games based on Conan the Barbarian
List_of_games_based_on_Conan_the_Barbarian
American novelist (born 1966)
including Star Trek: The Next Generation Role-playing Game, GURPS Mars, Star Hero, and GURPS Space. He is one of the founders of Zygote Games, and the co-designer
James_Cambias
1976 Tabletop fantasy role-playing game
copyright, to publish an official GURPS supplement. In 1988, O'Sullivan wrote an unofficial conversion of Bunnies & Burrows to GURPS while the negotiations continued
Bunnies_&_Burrows
American game publishing company
by colorful tiddlywinks. GURPS, the Generic Universal Role Playing System. GURPS Traveller, GDW's Traveller based upon GURPS. In Nomine, a game about
Steve_Jackson_Games
Role-playing game supplement
GURPS Monsters is a 128-page soft-bound book compiled by J. Hunter Johnson and published in 2002 by Steve Jackson Games as a supplement for the GURPS
GURPS_Monsters
Scicen fiction role-playing game
GURPS Wild Cards is a sourcebook published by Steve Jackson Games (SJG) in 1989 for the superhero role-playing game GURPS Supers, and is based on the
GURPS_Wild_Cards
Gaming magazine
Transhuman Space II, December 2013 63: Infinite Worlds II, January 2014 64: Pirates and Swashbucklers, February 2014 65: Alternate GURPS III, March 2014
Pyramid_(magazine)
Tabletop role-playing game
Reign of Steel is a setting sourcebook for the GURPS role-playing game system describing a future world conquered by a conspiracy of artificial intelligences
GURPS_Reign_of_Steel
Role-playing game supplement
GURPS Terradyne is a worldbook for GURPS. It is a future history suitable for a Hard Science Fiction campaign, in the tradition of stories by Robert A
GURPS_Terradyne
1997 video game
System (GURPS). It entered more coordinated development after Cain convinced Fargo of its potential, and Interplay announced it had acquired the GURPS license
Fallout_(video_game)
GURPS Compendium II: Combat and Campaigns is a 1996 role-playing game supplement published by Steve Jackson Games for GURPS. GURPS Compendium II: Combat
GURPS Compendium II: Combat and Campaigns
GURPS_Compendium_II:_Combat_and_Campaigns
Tabletop role-playing game
GURPS Illuminati University (1995) (ISBN 1-55634-206-3), also called GURPS IOU, is a 128-page softbound campaign setting sourcebook for the GURPS role-playing
GURPS_Illuminati_University
Tabletop role-playing game
GURPS Traveller: Interstellar Wars is the first fourth edition book in the GURPS Traveller role-playing game series, by Steve Jackson Games, set early
GURPS Traveller: Interstellar Wars
GURPS_Traveller:_Interstellar_Wars
Science fiction subgenre in a futuristic dystopian setting
published by R. Talsorian Games, and GURPS Cyberpunk, published by Steve Jackson Games as a module of the GURPS family of RPGs. Cyberpunk 2020 was designed
Cyberpunk
Battle for the Golden Sun West End Games Best Role-Playing Supplement GURPS Space Steve Jackson Games Best Graphic Presentation of an RPG Call of Cthulhu:
1988_Origins_Award_winners
Subgenres of the science fiction genre
Gods by S. M. Peters. The term was coined by the GURPS role-playing system in the sourcebook GURPS Steampunk Examples of clockpunk include The Blazing
Cyberpunk_derivatives
American cartoonist (born 1965)
Evan Dorkin (Trade Paperback) – Dark Horse Comics, 2026 GURPS Fantasy Folk GURPS Middle Ages I Space Ghost Coast to Coast (TV series), 1994–1999 "Gum, Disease"
Evan_Dorkin
Fictional character created by Robert E. Howard
its GURPS generic system of rules as of 1988 and a GURPS Conan core rulebook in 1989: GURPS Conan: Beyond Thunder River (1988, solo adventure) GURPS Conan
Conan_the_Barbarian
addition to the Typical Elf, Royal Elf, and Elf-Kin. GURPS Basic Set: Characters, GURPS Banestorm, GURPS Fantasy, and Dungeon Fantasy Adventurers, part of
Elves_in_fiction
2019 American animated TV series
Cleopatra in Space is an American science fiction animated television series produced by DreamWorks Animation and animated by Titmouse, Inc., based on
Cleopatra in Space (TV series)
Cleopatra_in_Space_(TV_series)
1948–54 series of science-fiction novels by E. E. "Doc" Smith
these was designed by Philip N. Pritchard. GURPS Lensman: Starkly Astounding Space-Opera Adventure for the GURPS roleplaying system was produced in 1993
Lensman_series
Aspect of role-playing gaming
detail. In GURPS 3rd edition there is a broad range of psionic abilities, vaguely game-balanced with its magic system. In the case of GURPS, categories
Psionics_(role-playing_games)
GURPS Super Scum is a sourcebook for GURPS. Super Scum is a book of "Supers" for GURPS Supers with an emphasis on villains. Each supervillain has a two-page
GURPS_Super_Scum
American game designer
Send in the Clones (1985) with Allen Varney. Spector also worked on the GURPS role-playing game. In March 1987 he was hired by TSR, initially working
Warren_Spector
American role-playing game designer
an introduction to GURPS in Steve Jackson's Man to Man, C.J. Carella got his first work in the role-playing games industry on GURPS Martial Arts (1990)
C._J._Carella
Martian volcano
orbit. Pavonis Mons also hosts a space elevator in other GURPS settings, including GURPS Mars. Pavonis Mons hosts a space elevator to Deimos in the Buck
Pavonis_Mons
Fantasy book series by Terry Pratchett
supplements for Discworld, utilising the third edition of the GURPS system: GURPS Discworld GURPS Discworld Also A revised second edition, the Discworld Roleplaying
Discworld
GURPS Callahan's Crosstime Saloon is a sourcebook for GURPS. It is a part of the extensive GURPS "generic" roleplaying system. This is a sourcebook for
GURPS Callahan's Crosstime Saloon
GURPS_Callahan's_Crosstime_Saloon
Science fiction and fantasy games magazine
definitely traumatic... but it gives us the time to do other things, especially GURPS". The magazine had been sold to Diverse Talents, Incorporated (DTI). They
The_Space_Gamer
2008-03-07. Retrieved 2026-05-12. "GURPS: Black Ops". InQuest (33): 32. January 1998 – via Internet Archive. "GURPS Vampire: The Masquerade". www.sjgames
List of role-playing game designers
List_of_role-playing_game_designers
Science fiction novel series by David Brin
and answers several unresolved riddles left over from Heaven's Reach." GURPS Uplift is a sourcebook for a science fiction themed role-playing game based
Uplift_Universe
Webcomic series by Andy Weir
election. The strip was turned into a roleplaying game titled GURPS Casey and Andy for the GURPS system by David Morgan-Mar in conjunction with Weir, with
Casey_and_Andy
American writer, game designer, and poet
Games). GURPS Time Travel with Steve Jackson (1991, Steve Jackson Games, ISBN 1-55634-115-6), a resource book for the GURPS roleplaying game GURPS Y2K with
John_M._Ford
Subgenre of fantasy fiction defined by a "mundane" setting
Stoddard, William H. (2009). GURPS Fantasy. Steve Jackson Games. p. 6. ISBN 9781556347962. Stoddard, William H. (2009). GURPS Fantasy. Steve Jackson Games
Low_fantasy
Tabletop science fiction role-playing game
Other reviews: Świat Gier Komputerowych #54 List of Cyberpunk 2020 books GURPS Cyberpunk – Tabletop role-playing game by Steve Jackson Games Cyberspace –
Cyberpunk_(role-playing_game)
1989 French role-playing game
tongue-in-cheek than the American game". This was also adapted to GURPS in 2000 as GURPS In Nomine. In 2015, a successful crowdfunding campaign provided
In Nomine Satanis/Magna Veritas
In_Nomine_Satanis/Magna_Veritas
Traveller science fiction game publications
First Survey (1997) Gateway to the Stars (1998) Missions of State (1998) GURPS Traveller, by Loren Wiseman (1998), published by Steve Jackson Games Alien
List_of_Traveller_books
1999 strategy video game
Power of the Mindworms. Steve Jackson Games published GURPS Alpha Centauri, a sourcebook for the GURPS role-playing game set in the Alpha Centauri universe
Sid_Meier's_Alpha_Centauri
guide to converting Albedo for use with the GURPS RPG system, written by Fred M. Sloniker and called GURPS Albedo. In 2004, Sanguine Productions published
Albedo_(role-playing_game)
Canadian writer and game designer (born 1964)
active throughout the 1990s as a freelance writer for other games including GURPS, Underground, Talislanta, Earthdawn, and Vampire: The Dark Ages, and later
Robin_Laws
Alternate history scenario
Cyberpilot (2019) Among the many alternate history timelines featured in the GURPS role-playing game Infinite Worlds is the highly dangerous timeline known
Hypothetical Axis victory in World War II
Hypothetical_Axis_victory_in_World_War_II
Video game seriеs
was originally intended to run under the GURPS role-playing game system. However, a disagreement with GURPS creator Steve Jackson over the game's violent
Fallout_(franchise)
American science fiction writer and game designer (1960–2014)
Karameikos (1987) Mythic Greece (Rolemaster) (1988) Strike Force (1988) GURPS Supers School of Hard Knocks (1989) Dungeon Master's Design Kit (1988) The
Aaron_Allston
British novelist and game designer
author, contributing towards the Steve Jackson Games titles In Nomine and GURPS, the White Wolf Publishing titles Orpheus and Exalted, and the Evil Hat
Genevieve_Cogman
American game designer
Role-Playing Product recognitions. In 2000, Castle Falkenstein was adapted to the GURPS system by James Cambias and Phil Masters, and released by Steve Jackson
Mike_Pondsmith
Attempted assassin of Franklin D. Roosevelt (1900–1933)
point of divergence. A similar Zangara-is-successful premise is used in the GURPS Alternate Earths role-playing game's "Reich 5" alternate universe. Max Allan
Giuseppe_Zangara
High level structures of a software system
311–322. doi:10.1109/icpc52881.2021.00037. ISBN 978-1-6654-1403-6. van Gurp, J. and Bosch, J.: 2002, Design erosion: Problems and causes, Journal of
Software_architecture
Form of role-playing game for leisure
Fantasy Hero (1985) and other games. Steve Jackson Games followed with GURPS (the Generic Universal Roleplaying System) in 1986. At the same time, games
Tabletop_role-playing_game
Fictional environment setting for a role-playing game
settings, such as Dungeons & Dragons or generic roleplaying systems such as GURPS or Fudge. There are also stand-alone settings that can be used for multiple
Campaign_setting
Tabletop combat simulation game
Jackson Games' GURPS system (called GURPS Autoduel). That GURPS worldbook has seen two editions. A series of expansions for both the GURPS version and boardgame
Car_Wars
1985 science fiction novel by Bruce Sterling
for a world, and also a great source of adventure ideas for any GURPS Cyberpunk or Space game." Additional short stories set in the Shaper/Mechanist universe
Schismatrix
Campaign setting and fictional universe
pre-existing, commercially available role playing rules including RuneQuest, GURPS, and third edition Dungeons & Dragons. Many of these are available on the
Tékumel
Board game designed by Steve Jackson
developed by Ral Partha. GURPS OGRE (2000) is a supplement using the rules system from the universal role-playing game GURPS. The OGRE Book (1982) is
Ogre_(board_game)
Dungeons & Dragons adventure module
Interior art List of Dungeons & Dragons modules Conan Against Darkness! GURPS Conan Conan Role-Playing Game Conan: The Roleplaying Game "Conan Unchained
Conan_Unchained!
American cartoonist (born 1956)
Illustrated GURPS Illuminati University (aka GURPS IOU) with Kaja Foglio. The dark to humorous Illuminati University setting for Steve Jackson Games GURPS Role
Phil_Foglio
Trading card series
appeared for the fourth edition of the tabletop role-playing game system GURPS. This included artwork taken from both the cards and the comics. A park
Mars_Attacks
Science Fiction Boardgame: Cosmic Encounter Best Roleplaying Supplement: GURPS Time Travel Best Roleplaying Adventure: Horror on the Orient Express (for
1991_in_games
disease. Cure it. – Extinction is approaching. Fight it." The GURPS Supplement Transhuman Space deals with a closer transhumanist future of the Solar System
Transhumanism_in_fiction
Fantasy role-playing game
violent incentives of D&D and the more versatile role-playing experience of GURPS. He claims that "for decades, gamers have argued that since D&D came first
Dungeons_&_Dragons
Eurorails GURPS Cyberpunk (role-playing supplement) Hoity Toity Nightlife (role-playing game) Republic of Rome Rifts (role-playing game) Space Crusade TimeLords
1990_in_games
Conquest of Space Die Macher Federation and Empire Flux Fortress America Ghostbusters (role-playing game) Generic Universal RolePlaying System (GURPS) L'An
1986_in_games
GURPS SPACE
GURPS SPACE
Girl/Female
Indian, Punjabi, Sikh
Gurus' Splendour
Boy/Male
Indian, Punjabi, Sikh
Gurus Peace
Boy/Male
Sikh
Gurus servant
Boy/Male
Sikh
Gurus sweetheart
Girl/Female
Indian, Punjabi, Sikh
Gurus Soul of Love
Boy/Male
Sikh
Gurus treasure
Boy/Male
Sikh
Gurus justice
Boy/Male
Sikh
Gurus slave
Boy/Male
Sikh
Gurus slave
Boy/Male
Sikh
Gurus skirt
Boy/Male
Sikh
Lord Guru, Gurus sight
Girl/Female
Indian
Gurus pride
Boy/Male
Sikh
Gurus service
Boy/Male
Sikh
Gurus gift
Boy/Male
Indian, Sikh
Ascendant of Gurus
Boy/Male
Sikh
Gurus vision
Boy/Male
Sikh
Lord Guru, Gurus sight
Boy/Male
Sikh
Gurus place of rest
Girl/Female
Indian
Gurus temple
Girl/Female
Indian
Gurus friend
GURPS SPACE
GURPS SPACE
Girl/Female
Arabic, Muslim
Devotee; Lover
Girl/Female
Australian
Priest
Boy/Male
Arabic, Muslim
One who Distributes
Girl/Female
German
Will-helmet
Girl/Female
Arabic, Australian, Muslim
Patient
Boy/Male
Hindu
Luckily Moon
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Telugu
Sheshnaag
Female
Gaelic
Old Gaelic name MUIRNE means "beloved."
Boy/Male
Hawaiian
Help.
Boy/Male
Hindu, Indian, Tamil
Lord Shiva
GURPS SPACE
GURPS SPACE
GURPS SPACE
GURPS SPACE
GURPS SPACE
n.
Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed.
imp. & p. p.
of Space
n.
A waste region; boundless space; immensity.
a.
Without space.
n.
That which is near, or not remote; that which is adjacent to anything; adjoining space or country; neighborhood.
n. pl.
Groatts.
n.
To arrange or adjust the spaces in or between; as, to space words, lines, or letters.
a.
Having the inner part cut away, or left vacant, a narrow border being left at the sides, the tincture of the field being seen in the vacant space; -- said of a charge.
n.
A forest officer appointed to walk over a certain space for inspection; a forester.
n.
A quantity or portion of extension; distance from one thing to another; an interval between any two or more objects; as, the space between two stars or two hills; the sound was heard for the space of a mile.
n.
Intermission of judicial proceedings; the space of time between the end of one term and the beginning of the next; nonterm; recess.
n.
Space unfilled or unoccupied, or occupied with an invisible fluid only; emptiness; void; vacuum.
n.
A small air cell, or globular space, in the interior of organic cells, either containing air, or a pellucid watery liquid, or some special chemical secretions of the cell protoplasm.
n.
One who holds the doctrine that the space between the bodies of the universe, or the molecules and atoms of matter., is a vacuum; -- opposed to plenist.
n.
Dimensions; compass; space occupied, as measured by cubic units, that is, cubic inches, feet, yards, etc.; mass; bulk; as, the volume of an elephant's body; a volume of gas.
n.
A border, limit, or boundary of a space; an edge, margin, or brink of something definite in extent.
n.
An empty space; a vacuum.
n.
The space inclosed between ranges of hills or mountains; the strip of land at the bottom of the depressions intersecting a country, including usually the bed of a stream, with frequently broad alluvial plains on one or both sides of the stream. Also used figuratively.
n.
The circular membrane that partially incloses the space beneath the umbrella of hydroid medusae.
n.
A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum.