Definition of protogalaxy in English:

protogalaxy

Syllabification: pro·to·gal·ax·y
Pronunciation: /ˌprōtōˈgaləksē
 
/

noun (plural protogalaxies)

Astronomy
A vast mass of gas from which a galaxy is thought to develop.
More example sentences
  • According to current models, that's not enough time to allow for the formation of either the quasars that illuminate the atomic gas or the protogalaxies that harbor the first stars.
  • The protogalaxy probably has since coalesced into a giant elliptical galaxy, he says.
  • Those that are still around us bear the imprint of the chemical composition of the protogalaxy in their atmospheres, like living fossils of a bygone era in the history of the Earth.

Derivatives

protogalactic

Pronunciation: /-gəˈlaktik/
adjective
More example sentences
  • Eventually, these protogalactic fragments merged and galaxies and quasars formed.

Definition of protogalaxy in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day guzzle
Pronunciation: ˈgʌz(ə)l
verb
eat or drink (something) greedily