a diagram of the heavens, showing the relative position of planets and the signs of the zodiac, for use in calculating births, foretelling events in a person's life, etc.
2.
a prediction of future events or advice for future behavior based on such a diagram.
Origin: bef. 1050; ME, OE horoscopus < L < Gk hōroskópos = hōro-, comb. form of hrahour+ skópos-scope
The aspect of the planets and stars at a given moment, such as the moment of a person's birth, used by astrologers.
A diagram of the signs of the zodiac based on such an aspect.
An astrological forecast, as of a person's future, based on a diagram of the aspect of the planets and stars at a given moment.
[French, from Old French, from Latin hōroscopus, from Greek hōroskopos : hōrā, hour, season; see yēr- in Indo-European roots + skopos, observer; see spek- in Indo-European roots.]
[hawr-uh-skohp, hor‑] 
əˌskoʊp
ra