noun

1. 1. a group of stars in the sky, usually named after some object, animal, or mythological being that it supposedly resembles or suggests
   2. the area of the sky assigned to such a group of stars: currently the sky is considered to have 88 constellations
2. any brilliant cluster, gathering, or collection
3. Astrol. the grouping of celestial bodies at any particular time, esp. at a person's birth
4. Psychol. a group of related thoughts or feelings regarded as clustered about one central idea

Etymology: ME constellacion < OFr < LL constellatio < constellatus, set with stars < L com-, with + pp. of stellare, to shine < stella, star