Historical Dictionary of Science Fiction

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First date Word Definition
1914 atomic engine n. (1914) an engine powered by nuclear energy
1914 dayside n. (1914) the side of a planet 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 lightspeed n. 1 (1914) the speed of light
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
1915 light-second n. (1915) the distance light travels in one second
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.
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.
1918 cycle n. (1918) a (specific) interval of time
1918 planeteer n. (1918) someone who travels to or explores other planets
1918 super-weapon n. (1918) a weapon, esp. an extremely destructive one, based on highly advanced technology
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 super-science n.; relating to or generated by the products of super-science
1919 Venerian n. 1 (1919) a native or inhabitant of Venus; Venusian n.
1919 Venerian adj. (1919) pertaining to Venus or Venusians; Venustian adj.
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
1920 world-building n. (1920) the creation of fictional planets and their geology, geography, biology, etc., often including the history and culture of their inhabitants
1921 deep space n. (1921) that part of space far away from planets or stars
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
1922 earth person n. (1922) a native or inhabitant of Earth; cf. earth people n.
1923 fantasist n. (1923) a writer of fantasy n. 1
1923 fantastic n. 1 (1923) of a creative work: that which has the qualities of fantasy n. 1
1923 parallel universe n. (1923) a universe conceived of as existing alongside our own, having many similarities to it but usually differing from it in some significant way (as having a different history or different physical laws)
1923 space travel n. (1923) travel through outer space