Historical Dictionary of Science Fiction

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Word Definition
unobtainium n. (1956) a hypothetical substance that would be highly desirable but is unrealized or unobtainable; a notional substance with exceptional or ideal properties
unperson n. (1949) a person who, usually for political reasons, is deemed not to have existed and whose name is removed from all public records; hence, more generally: a person whose contributions or achievements are officially denied or disregarded; a person regarded as less than human
unsuit v. (1957) to remove a spacesuit
unsuited adv. (1957) without wearing a spacesuit
uplift n. (1980) the making of a sentient species from a non-sentient one, esp. by genetic engineering
uplift v. (1980) to transform a non-sentient species into a sentient species, esp. by genetic engineering
uplifter n. (2006) a genetic engineer who carries out uplift n.
uplifting n. (1980) = uplift n.
uptime adj. (1972) esp. in time-travel contexts: in or from the future; cf. downtime adj.
uptime adv. (1972) esp. in time-travel contexts: in, into, or toward the future; cf. downtime adv.
Uranian n. (1834) a native or inhabitant of Uranus; (also) the language of Uranians
Uranian adj. (1839) of or relating to the planet Uranus or its inhabitants
urban fantasy n. (1978) a genre of fantasy that uses a (modern) city as its primary setting; a work in this genre
utopia n. (No cites) a place, state, or condition ideally perfect in respect of politics, laws, customs, and conditions
utopian n. (No cites) one who conceives, proposes, or introduces schemes supposed or intended to bring about improved or perfect social and political conditions, etc.; an advocate of social reform
utopian adj. (1981) possessing or regarded as having impossibly or extravagantly ideal conditions in respect of politics, customs, social organization, etc.
vac-suit n. (1938) = vacuum suit n.
vac-suited adj. (1939) = vacuum-suited adj.
vacuum suit n. (1926) = space suit n.
vacuum-suited adj. (1937) wearing a vacuum suit n.
vape v. (1976) to vaporize by means of a weapon; to destroy completely, to annihilate
Vegan n. 1 (1930) a native or inhabitant of the solar system of the star Vega
Vegan n. 2 (1942) the language of Vegans
Vegan adj. (1930) of or pertaining to the star Vega, or the natives or inhabitants of its solar system
Venerian n. 1 (1919) a native or inhabitant of Venus; = Venusian n. 1
Venerian n. 2 (1948) the language of Venerians
Venerian adj. (1919) pertaining to Venus or Venusians; = Venustian adj.
Venusian n. 1 (1874) a native or inhabitant of the planet Venus
Venusian n. 2 (1931) the language of Venusians
Venusian adj. (1872) of, pertaining to, or characteristic of the planet Venus or its inhabitants
Vernean adj. (1883) of, pertaining to, or characteristic of the science fiction of Jules Verne
verse n. (2002) the universe; (also) one of many universes in a multiverse; cf. earlier -verse suffix
-verse suffix (1985) (used to form nouns denoting the fictional universe used as the setting of a series (or occasionally a work), typically in combination with the title, main character, or creator of the series); (also) any media, fandom, etc. connected to a series; cf. slightly earlier Whoniverse n.
vessel n. (1900) a spacecraft