An Etymological Dictionary of Astronomy and Astrophysics

A schematic drawing showing the positions of the Sun, Moon, and planets at the time of a person’s birth for baseless astrological purposes.

Etymology (EN): From M.Fr. horoscope, from L. horoscopus, from Gk. horoskopos “nativity, horoscope,” also “one who casts a horoscope,” from hora “hour” + skopos “watching.”

Etymology (PE): Zâyecé “horoscope, thema,” from Mid.Pers. zâycag “horoscope,” from zâyidan, zâdan, “to give birth, bring forth;”
Av. zan-
“to bear, give birth to a child, be born,” infinitive zazāite, zāta- “born;” cf. Skt. jan- “to produce, create; to be born,”
janati “begets, bears;” Gk. gignomai “to happen, become, be born;” L. gignere “to beget;” PIE base *gen- “to give birth, beget.”