Historical Dictionary of Science Fiction

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First date Word Definition
1921 geas n. (1921) in fantasy writings: a spell; a magical compulsion
1921 time binding n. (1921) in General Semantics: the characteristically human ability to transmit knowledge to succeeding generations by means of (written) language; (hence, in Fandom) the act of documenting fannish activities
1920 inner space n. (1920) the human mind; the innermost parts of one’s psyche
1920 light-hour n. (1920) the distance light travels in one hour
1920 moon rocket n. (1920) a rocket designed for travel to the Moon
1920 robot n. (1920) a (semi-)intelligent artificial being typically made of metal and resembling in some way a human or other animal
1920 sentient adj. (1920) sapient; intelligent
1919 alien adj. (1919) of or pertaining to an (intelligent) being or beings from another planet; that derives from another world
1919 different story n. (1919) esp. in the early pulp era: a science fiction, fantasy, or weird story; an impossible story
1919 fanboy n. (1919) a male fan (in later use chiefly of comics, film, music, or science fiction), esp. an obsessive one
1919 moon flight n. (1919) a flight to the Moon
1919 superscientific adj. (1919) of or pertaining to superscience n.; relating to or generated by the products of super-science
1919 Venerian n. 1 (1919) a native or inhabitant of Venus; = Venusian n. 1
1919 Venerian adj. (1919) pertaining to Venus or Venusians; = Venustian adj.
1918 cycle n. (1918) a (specific) interval of time
1918 planeteer n. (1918) someone who travels to or explores other planets
1918 sellsword n. (1918) chiefly in or with reference to fantasy literature: a mercenary; a hired soldier
1917 energy gun n. (1917) a weapon firing a beam of energy n.; = ray gun n.
1917 ray gun n. (1917) a (typically) hand-held device that emits rays, esp. destructive or harmful ones; cf. slightly earlier ray projector n.
1917 supervillain n. (1917) a person who uses superpowers or superscience for malevolent purposes
1916 posthuman adj. (1916) of or relating to a hypothetical species that might evolve from human beings, as by means of genetic or bionic augmentation; cf. posthuman n.
1916 ray projector n. (1916) a large ray gun n.
1916 scientifiction n. (1916) = science fiction n. 2
1915 visiphone n. (1915) = videophone n.
1914 atomic engine n. (1914) an engine powered by nuclear energy
1914 dayside n. (1914) the side of a planet or moon that is in daylight, sometimes in the context of a planet with one side permanently facing its sun
1914 imaginative adj. (1914) denoting a genre of literature, etc. that is not realistic or mimetic; science fiction, fantasy, and horror collectively
1914 light-minute n. (1914) the distance light travels in one minute
1914 Mercurian n. 2 (1914) the language of Mercurians
1914 nightside n. (1914) that part of an astronomical body facing away from the nearest star; cf. darkside n. 1, farside n.
1914 time travel n. (1914) the activity of travelling into the past or future; hypothetical movement through time n.
1914 Wellsian n. (1914) a devotee or follower of H. G. Wells
1913 impossible story n. (1913) esp. in the early pulp era: a work of imaginative fiction; a different story n.
1913 Terranian n. (1913) a native or inhabitant of Earth; = Terran n. 1; also as adj.
1912 adamantium n. (1912) a metal alloy having exceptional strength