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
The giant protostar is belching off a powerful jet that has cleared away dust, Hubble officials wrote in an image description.
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Space.com Staff, Space.com, 1 Jan. 2025
Usually, these protostars gather enough mass to generate the pressures and temperatures in the core to fuse hydrogen to helium, which is the nuclear process that defines what a main sequence star is.
—Robert Lea, Space.com, 24 Dec. 2024
Day 18 of the 2024 Space Telescope Advent Calendar: an energetic protostar.
—Alan Taylor, The Atlantic, 18 Dec. 2024
This births a protostar that continues to gather matter from its prenatal cocoon of gas and dust.
—Robert Lea, Space.com, 24 Dec. 2024
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Space.com Staff, Space.com, 1 Jan. 2025
Usually, these protostars gather enough mass to generate the pressures and temperatures in the core to fuse hydrogen to helium, which is the nuclear process that defines what a main sequence star is.
—Robert Lea, Space.com, 24 Dec. 2024
Day 18 of the 2024 Space Telescope Advent Calendar: an energetic protostar.
—Alan Taylor, The Atlantic, 18 Dec. 2024
This births a protostar that continues to gather matter from its prenatal cocoon of gas and dust.
—Robert Lea, Space.com, 24 Dec. 2024
See all Example Sentences for protostar
Dictionary Entries Near protostar
Cite this Entry
“Protostar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protostar. Accessed 22 Jan. 2025.
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