| Date added | Word | Definition |
|---|---|---|
| 2021-07-21 | spider sense n. (1975) | in the fictional world of the comic book hero Spider-Man: the precognitive ability to anticipate (and react to) dangerous situations; (hence, in figurative or allusive use) a premonition; intuition; insight |
| 2021-07-20 | kryptonite n. (1943) | in the fictional world of the comic book hero Superman: a substance that renders Superman weak when he is exposed to it; (hence, in figurative or allusive use) something that can weaken or damage a particular person or thing; an Achilles heel |
| 2021-07-20 | space tunnel n. (1975) | = wormhole n. |
| 2021-07-14 | gripping hand n. (1986) | on the gripping hand: used to introduce a third point of view, fact, case, etc., that contrasts with two previous statements |
| 2021-05-18 | gynoid n. (1979) | a robot having female or feminine characteristics; = robotrix n. |
| 2021-05-15 | Earthsider n. (1966) | a native or inhabitant of Earth |
| 2021-05-14 | Jupiterian n. (1855) | a native or inhabitant of the planet Jupiter |
| 2021-05-14 | Jupiterian adj. (1907) | of or pertaining to the planet Jupiter or its inhabitants |
| 2021-05-14 | thruster n. (1949) | an engine that creates thrust, esp. a small rocket engine used to adjust the attitude or course of a spacecraft in flight |
| 2021-05-13 | universal translator n. (1949) | a device, computer system, etc. that (instantaneously) translates among languages |
| 2021-05-13 | atmosphere suit n. (1948) | = space suit n. |
| 2021-04-30 | mecha n. (1986) | chiefly in anime or manga: a large combat robot having humanoid form, typically controlled by an occupant |
| 2021-04-30 | mech n. (1938) | = robot n.; (also) = mecha n. |
| 2021-04-29 | biosuit n. (1969) | any of various protective garments, as: a suit designed to protect the wearer from biological hazards; a protective suit made of biological materials; a relatively flexible and lightweight spacesuit |
| 2021-04-29 | Mercurian adj. (1897) | of, pertaining to, or characteristic of the planet Mercury or its inhabitants |
| 2021-04-29 | weirdist n. (1936) | an author or fan of weird fiction |
| 2021-04-29 | telepath v. (1885) | to communicate (something) by telepathy; (also) to communicate with (a person) by telepathy |
| 2021-04-28 | planetman n. (1937) | a person from oneโs home planet n. |
| 2021-04-28 | thought-variant n. (1933) | a story characterized by a focus on significant ideas rather than action |
| 2021-04-28 | sensawunda n. (1978) | = sense of wonder n. |
| 2021-04-16 | shipmind n. (1975) | an intelligent entity (alien or computer-based) that helps control a spacecraft |
| 2021-04-13 | rocketport n. (1931) | a place where rockets can take off and land; cf. spaceport n. |
| 2021-04-12 | warship n. (1898) | a military spaceship designed for combat |
| 2021-04-12 | fleet n. (1898) | = space fleet n. |
| 2021-04-12 | battleship n. (1900) | a military spaceship having heavy armor and powerful weapons |
| 2021-04-11 | Lunite n. (1928) | a native or inhabitant of Earthโs Moon; = Lunarian n.; Lunarite n. |
| 2021-04-11 | Lunarite n. (1888) | a native or inhabitant of Earthโs Moon; = Lunarian n.; Lunite n. |
| 2021-04-11 | Loonie n. (1941) | a native or inhabitant of Earthโs Moon; = Lunarian n.; Lunite n.; Lunarite n. |
| 2021-04-02 | scouter n. (1936) | = scout ship n. |
| 2021-04-02 | scout ship n. (1930) | a usu. small and fast spaceship used for reconnaissance |
| 2021-04-01 | sailship n. (1964) | a spacecraft using a solar sail as its chief method of propulsion |
| 2021-03-30 | NAFAL adj. (1969) | of space travel: at relativistic speed; of a spaceship: capable of travelling at relativistic speed |
| 2021-03-29 | armorplast n. (1964) | a strong protective material likened to plastic (as being light, flexible, or transparent) |
| 2021-03-29 | gravity n. (1930) | = gee n. 2 |
| 2021-03-25 | organlegging n. (1969) | the illegal trading of human organs for transplant; cf. organlegger n. |
| 2021-03-25 | meatspace n. (1993) | the physical world, in contrast to cyberspace or a virtual environment |
| 2021-03-25 | datapad n. (1962) | a thin handheld electronic device for viewing and manipulating information; a tablet computer |
| 2021-03-24 | escape ship n. (1932) | = lifeboat n.; lifeship n. |
| 2021-03-22 | mundane n. 1 (1946) | a non-imaginative story |
| 2021-03-19 | robotrix n. (1933) | a robot assigned a female identity; a robot having female or feminine characteristics |
| 2021-03-16 | fanarchistic adj. (1944) | preferring to avoid organized forms of fandom |
| 2021-03-16 | fanarchist n. (1955) | a fan who shuns organized fandom; a fan who advocates for anarchy |
| 2021-03-15 | xenopsychology n. (1972) | the psychology of alien races |
| 2021-03-15 | xenopsychologist n. (1980) | an expert in xenopsychology n. |
| 2021-03-10 | psychohistorian n. (1945) | an expert in psychohistory n. |
| 2021-03-08 | companion n. (1963) | in the British television series Doctor Who: any of the usually human characters who (regularly) travel with the Doctor |
| 2021-03-08 | regeneration n. (1978) | in the British television series Doctor Who: the process by which a Time Lord transforms themself into a new physical form, esp. after an experience that would otherwise be fatal; (also) a particular manifestation of a Time Lord |
| 2021-03-08 | Cyberman n. (1966) | in the British television series Doctor Who: one of a race of emotionless cybernetic humanoids |
| 2021-03-08 | time lord n. (1969) | in the British television series Doctor Who: one of a race of humanoid aliens from the planet Gallifrey who are able to control time-travel technology |