Historical Dictionary of Science Fiction

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Word Definition
trekkie n. (1969) an admirer of the U.S. television programme Star Trek
tribble n. (1967) in the fictional universe of the Star Trek franchise: a species of small, furry, featureless alien
tricorder n. (1966) in the fictional universe of the Star Trek franchise: a medium-sized hand-held device used for data sensing, analysis, and recording
tri-D n. (1950) a device or system capable of transmitting or displaying a three dimensional image or video; (also) a three-dimensional image or video
tridee n. (No cites) see tri-D n.
trideo n. (1953) a device or system capable of transmitting or displaying a (moving) three dimensional image; a (moving) image displayed by such a device
tri-di n. (No cites) see tri-D n.
tri-dim n. (1942) a device or system capable of transmitting or displaying a three dimensional image; (also) a three-dimensional image or video; = tri-D n.
triffid n. (1951) in John Wyndhamโ€™s novel The Day of the Triffids: one of a race of malevolent alien plants which threaten to overrun the world
triffidian adj. (No cites) like, or in the manner of a triffid
triffid-like adj. (No cites) like, or in the manner of a triffid
tri-v n. (1954) a device or system capable of recording, transmitting, or displaying a (moving) three dimensional image; such a system as a form of entertainment
trivee n. (No cites) see tri-v n.
tri-vid n. (1955) a device or system capable of transmitting or displaying a three-dimensional image
trufan n. (1954) a science fiction fan who adheres to the ideals and practices of fandom
trufandom n. (1954) the state of being a trufan; excellence in fannish behavior
uchronia n. (1938) = alternate history n.
uchronian adj. (1974) of or relating to uchronias
uchronic adj. (1938) of or relating to uchronias
UFO n. (1953) an unidentified flying object; a โ€˜flying saucerโ€™
ultradrive n. (1949) a type of faster-than-light star drive
ultraphone n. (1928) a communications device that transmits messages faster than the speed of light
ultrawave n. (1934) a communication system that transmits messages faster than the speed of light; (also) a wave phenomenon used by such devices
unfannish adj. (1953) (of a person) failing to be fannish; not having the attributes of a dedicated or obsessive fan; (also, of writing, organizations, etc.) not interesting to or characteristic of dedicated fans
unhuman n. (1944) an intelligent nonhuman entity; alien n.; cf. non-human n.
universal translator n. (1949) a device, computer system, etc. that (instantaneously) translates among languages
universe n. (1947) the setting of a work or series of fiction, esp. of imaginative fiction
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. (1978) esp. in time-travel contexts: in or from the future; cf. downtime adj.