| Astronomer 1. (n.) An astrologer. 2. (n.) One who is versed in astronomy; one who has a knowledge of the laws of the heavenly orbs, or the principles by which their motions are regulated, with their various phenomena. Thesaurus Entries Chaldean, astroalchemist, astrogeologist, astrographer, astrologer, astrologian, astromancer, astronomer, astrophysicist, genethliac, horoscoper, horoscopist, radar astronomer, radio astronomer, solar physicist, uranographer, uranographist, uranologist, uranometrist |