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protogalaxy

[ proh-toh-gal-uhk-see, proh-toh-gal- ]

noun

, Astronomy.
, plural pro·to·gal·ax·ies.
  1. the large concentration of gas and dust from which a galaxy is formed.

protogalaxy

/ ˌprəʊtəʊˈɡæləksɪ /

noun

  1. a cloud of gas in the early stages of its evolution into a galaxy
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of protogalaxy1

First recorded in 1945–50; proto- + galaxy
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Example Sentences

By accounting for stars obscured by dust, Rix estimates that the protogalaxy is between 50 million and 200 million times as massive as the sun.

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