Sidereal — sidereal antonyms, definition

1. sidereal (Adjective)

1 antonym
civil
2 definitions

sidereal (Adjective) — Of or relating to the stars or constellations. ex. "sidereal bodies" ex. "the sidereal system"

sidereal (Adjective) — (of divisions of time) determined by daily motion of the stars. ex. "sidereal time"