protostar

noun
pro·to·star | \ ˈprō-tō-ˌstär \

Definition of protostar 

: a cloud of gas and dust in space believed to develop into a star

Examples of protostar in a Sentence

Recent Examples on the Web

In the center, the material clumped together to form a protostar that would eventually become the sun. Valerie Strauss, Washington Post, "Facts about our sun and moon that you’re embarrassed to admit you don’t know," 9 Aug. 2017 This contact triggered a forceful explosion that hurled streams of dust, gas, and other protostars into interstellar space at speeds over 90 miles per second, according to a statement from the National Radio Astronomy Observatory (NRAO). Brigit Katz, Smithsonian, "Scientists Capture Beautiful, Explosive Collision of Young Stars," 12 Apr. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'protostar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of protostar

1947, in the meaning defined above

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The first known use of protostar was in 1947

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