pro·​to·​gal·​axy ˌprō-tō-ˈga-lək-sē How to pronounce protogalaxy (audio)
: a cloud of gas believed to be the precursor to a galaxy

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of protogalaxy was in 1950

Dictionary Entries Near protogalaxy

Cite this Entry

“Protogalaxy.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2024.

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