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
Recent Examples on the Web
Astronomers find these high-energy outflows are easier to see than the protostars that launch them.
—
Robert Lea, Space.com, 28 Apr. 2025
These protostars get their names from the Herschel Orion Protostar Survey.
—Alan Taylor, The Atlantic, 28 Apr. 2025
Herbig-Haro objects are glowing clouds of gas and dust shaped by newborn stars or protostars.
—Victoria Corless, Space.com, 24 Mar. 2025
Hiding 450 light-years away in a dark molecular cloud in the Taurus constellation, the young protostar that Webb illuminated is one that has long been of interest to astronomers.
—Eric Lagatta, USA TODAY, 12 Feb. 2025
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Robert Lea, Space.com, 28 Apr. 2025
These protostars get their names from the Herschel Orion Protostar Survey.
—Alan Taylor, The Atlantic, 28 Apr. 2025
Herbig-Haro objects are glowing clouds of gas and dust shaped by newborn stars or protostars.
—Victoria Corless, Space.com, 24 Mar. 2025
Hiding 450 light-years away in a dark molecular cloud in the Taurus constellation, the young protostar that Webb illuminated is one that has long been of interest to astronomers.
—Eric Lagatta, USA TODAY, 12 Feb. 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 11 May. 2025.
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