Mid 17th century; earliest use found in Joseph Beaumont (1616–1699), poet and college head. From French astrologique or its etymon post-classical Latin astrologicus from ancient Greek ἀστρολογικός of or for astronomy from ἀστρολόγος + -ικός. Compare Spanish astrológico, Portuguese astrológico, Italian astrologico, and also German astrologisch.