zodiac
noun /ˈzəʊdiæk/
  /ˈzəʊdiæk/
 - the zodiac[singular] the imaginary area in the sky in which the sun, moon and planets appear to lie, and which has been divided into twelve equal parts, each with a special name and symbol- the signs of the zodiac
 
- [countable] a diagram of these twelve parts, and signs that some people believe can be used to predict how the planets will influence our lives
Word Originlate Middle English: from Old French zodiaque, via Latin from Greek zōidiakos, from zōidion ‘sculptured animal figure’, diminutive of zōion ‘animal’.