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Meaning of globular cluster

glob'ular clus'ter

Pronunciation: [key]
— Astron. Astron.
  1. a comparatively older, spherically symmetrical, compact group of up to a million old stars, held together by mutual gravitation, that are located in the galactic halo and move in giant and highly eccentric orbits around the galactic center.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.