protosun

noun

pro·​to·​sun
¦prōtō+
: protostar
especially : the gaseous cloud that underwent gravitational collapse to form the sun

Word History

Etymology

prot- + sun entry 1

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of protosun was in 1949

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Dictionary Entries Near protosun

Cite this Entry

“Protosun.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protosun. Accessed 19 Mar. 2024.

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