As-trŏl'o-gy, n.

n. [Fr. astrologie, Pr. & Lat. astrologia, Gr. ἀστρολογία. See ASTROLOGER.] In its etymological signification, the science of the stars; among the ancients, synonymous with astronomy; subsequently, the art of judging of the influences of the stars, and of foretelling future events by their position and aspects.

☞ Astrology was much in vogue during the middle ages, and became the parent of modern astronomy, as alchemy did of chemistry. It was divided into two kinds: judicial astrology, which pretended to foretell the fate and acts of nations and individuals, and natural astrology, which predicted events of brute and inanimate nature, such as changes of the weather, &c.