Dictionary
pro•to•gal•ax•y
Pronunciation: (prō"tō-gal'uk-sē, prō'tō-gal"-), [key]—
n.,
—pl. -ax•ies.
Astron.
the large concentration of gas and dust from which a galaxy is formed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.