\As*trol"o*gy\ ([a^]s*tr[o^]l"[-o]*j[y^]), n. [F.
astrologie, L. astrologia, fr. Gr. 'astrologi`a, fr.
'astrolo`gos astronomer, astrologer; 'asth`r star + lo`gos
discourse, le`gein to speak. See {Star}.]
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 upon human
affairs, and of foretelling events by their position and
aspects.

Note: 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 assumed to foretell the fate and acts
      of nations and individuals, and natural astrology,
      which undertook to predict events of inanimate nature,
      such as changes of the weather, etc.