1. Callistoan - Noun
2. Callistoan - Adjective
Callistoan (not comparable)
(astronomy) Of, or pertaining to Callisto, the second largest moon of Jupiter.
Callistoan (plural Callistoans)
(science fiction) An inhabitant of Callisto
Its presence would explain the lack of any signs of the endogenic activity on the Callistoan surface. Source: Internet
The Callistoan surface is asymmetric: the leading hemisphere The leading hemisphere is the hemisphere facing the direction of the orbital motion; the trailing hemisphere faces the reverse direction. Source: Internet