| Date added | Word | Definition |
|---|---|---|
| 2022-01-06 | earthshine n. (1813) | sunlight reflected from Earth (esp. as illuminating or visible on the surface of the Moon) |
| 2021-12-30 | Sirian n. 2 (1949) | the language of Sirians |
| 2021-12-29 | Sirian adj. (1876) | of or relating to the Sirius system or its inhabitants |
| 2021-12-29 | Sirian n. 1 (1834) | a native or inhabitant of the Sirius system |
| 2021-12-28 | Venusian n. 2 (1931) | the language of Venusians |
| 2021-12-23 | Callistan n. 2 (1941) | the language of Callistans |
| 2021-12-23 | Callistan adj. (1933) | of or relating to the Jovian moon Callisto or its inhabitants |
| 2021-12-23 | Callistan n. 1 (1932) | a native or inhabitant of the Jovian moon Callisto |
| 2021-12-22 | glitch n. (1998) | in phrase a glitch in the matrix: in the 1999 film The Matrix: an anomaly in the virtual representation of reality in which much of the film takes place, indicating a change or error in the underlying computer simulation; (hence, broadly) a mistake, an error, a problem |
| 2021-12-20 | Europan adj. (1931) | of or relating to the Jovian moon Europa or its inhabitants |
| 2021-12-20 | Europan n. 2 (1930) | the language of Europans |
| 2021-12-20 | Europan n. 1 (1930) | a native or inhabitant of the Jovian moon Europa |
| 2021-12-17 | Saturnian n. 2 (1935) | the language of Saturnians |
| 2021-12-17 | Saturnian adj. (1675) | of or relating to the the planet Saturn or its inhabitants |
| 2021-12-16 | Saturnian n. 1 (1738) | a native or inhabitant of the planet Saturn |
| 2021-12-16 | Neptunian n. 2 (1930) | the language of Neptunians |
| 2021-12-16 | Neptunian adj. (1849) | of or relating to the the planet Neptune or its inhabitants |
| 2021-12-09 | holovid n. (1973) | a holographic video; a device or system that displays or records holographic videos; cf. holovision n. |
| 2021-12-06 | Peter Parker principle n. (No cites) | see Spider-Man principle n. |
| 2021-12-06 | Spider-Man principle n. (2003) | the adage ‘with great power comes great responsibility’ |
| 2021-11-30 | astrogating n. (1932) | = astrogation n. |
| 2021-11-23 | needle pistol n. (1933) | a handheld needle gun n. |
| 2021-11-19 | biotech n. (1951) | = biotechnician n. |
| 2021-11-12 | meat world n. (1992) | = meatspace n. |
| 2021-11-09 | New Weird n. (2002) | a genre that incorporates elements of fantasy, science fiction, and horror, typically in a complex urban setting |
| 2021-10-26 | stellar cartography n. (1883) | a branch of cartography concerned with astronomical objects; (occas. cap.) an organizational unit or work area devoted to this; cf. astrogation n. |
| 2021-10-25 | 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 |
| 2021-10-22 | power-up n. (1983) | in a video game: an item that immediately provides temporary extra abilities to a player |
| 2021-10-15 | galaxy-wide adv. (1949) | throughout a galaxy |
| 2021-10-14 | doppel n. (1981) | a duplicate version of a person, as a clone, a virtual-reality representation, a shapeshifter, etc. |
| 2021-10-11 | fantascience n. (1934) | = science fantasy n. 3; science fiction n. 2 |
| 2021-10-08 | shaggy god story n. (1965) | a story in which a religious (esp. biblical) myth is explained as having a science fictional origin |
| 2021-09-28 | combozine n. (1946) | a collection of zines bound or published together, esp. for distribution at a convention |
| 2021-09-27 | pseudopod n. (1929) | a temporary functional limb extended from the body of an amorphous being |
| 2021-09-24 | fanning n. (1941) | the practice or activity of being a fan; participation in fandom |
| 2021-09-23 | cybernetically adv. (1951) | by means of cybernetic technology |
| 2021-09-22 | Africanfuturism n. (2018) | Nnedi Okorafor’s term for: a subgenre of science fiction that heavily features elements of African history or culture; cf. Afrofuturism |
| 2021-09-22 | Afrofuturistic adj. (2000) | = Afrofuturist adj. |
| 2021-09-22 | Afrofuturist adj. (1994) | of, relating to, or characterized by Afrofuturism n. |
| 2021-09-21 | automatics n. (1932) | a system that controls the flight of a spacecraft with little or no human intervention; any system or technology for the unsupervised control of a vehicle, environment, etc. |
| 2021-09-21 | beast mode n. (1991) | in a video game: a (temporary) state in which a human transforms into an animal or mythical creature, typically having extra power or skills; (hence) a (temporary) state of aggression or great performance |
| 2021-09-20 | kilohour n. (1989) | a period of one thousand hours |
| 2021-09-16 | timequake n. (1954) | a sudden significant disturbance in the continuity of time; cf. time storm n., time-slip n. |
| 2021-09-15 | fan film n. (1961) | a movie made by a fan; audiovisual fan fiction n. |
| 2021-09-14 | cityship n. (1953) | a large spacecraft having the size or complexity of a city |
| 2021-09-13 | murderbot n. (2006) | a robot or cyborg designed chiefly to inflict violence |
| 2021-09-02 | impeller n. (1936) | a device used to produce propulsive thrust |
| 2021-09-01 | cli-fi n. (2009) | a subgenre of science fiction concerned with the effects of climate change |
| 2021-08-31 | kipple n. (1960) | useless or unwanted (household) objects; junk; rubbish |