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Dictionary


o'pen clus'ter



Astron.
a comparatively young, irregularly shaped group of stars, often numbering up to several hundred, and held together by mutual gravitation; usually found along the central plane of the Milky Way and other galaxies. Also,galactic cluster.Cf. globular cluster, stellar association.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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