Meaning

noun a prediction of someone's future based on the relative positions of the planets

noun a diagram of the positions of the planets and signs of the zodiac at a particular time and place

originBorrowed from Middle French horoscope, from Medieval Latin horoscopus, from Ancient Greek ὡροσκόπος (hōroskópos), from ὥρα (hṓra, “any limited time”) + σκοπός (skopós, “watcher”). By surface analysis, horo- + -scope.

Etymology from Wiktionary, CC BY-SA 3.0