protostar
noun
pro·to·star
ˈprō-tō-ˌstär 
: a cloud of gas and dust in space believed to develop into a star
Examples of protostar in a Sentence
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The central young star, or protostar, weighing as much as 10 of our suns, is located 15,000 light-years away in the outer reaches of our galaxy.
—
Eric Lagatta, USA Today, 12 Sep. 2025
This material bunches up into a disk around the young protostar.
—Keith Cooper, Space.com, 11 Sep. 2025
Beyond this star, ALMA also detected molecular outflows from four additional protostars, confirming that star formation is widespread even in these remote, chemically primitive regions.
—Rupendra Brahambhatt, Interesting Engineering, 7 Sep. 2025
Instead, with this tweak to dark matter, the early protostar that forms will instead remain in a large, relatively cool state for a long time, which can grow the protostar up to 100,000 solar masses or even more.
—Ethan Siegel, Big Think, 2 Sep. 2025
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Eric Lagatta, USA Today, 12 Sep. 2025
This material bunches up into a disk around the young protostar.
—Keith Cooper, Space.com, 11 Sep. 2025
Beyond this star, ALMA also detected molecular outflows from four additional protostars, confirming that star formation is widespread even in these remote, chemically primitive regions.
—Rupendra Brahambhatt, Interesting Engineering, 7 Sep. 2025
Instead, with this tweak to dark matter, the early protostar that forms will instead remain in a large, relatively cool state for a long time, which can grow the protostar up to 100,000 solar masses or even more.
—Ethan Siegel, Big Think, 2 Sep. 2025
See All Example Sentences for protostar
Cite this Entry
“Protostar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protostar. Accessed 17 Sep. 2025.
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