planetesimal hypothesis

noun

: a hypothesis in astronomy: the planets have evolved by aggregation from planetesimals

Examples of planetesimal hypothesis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
So far, the planetesimal hypothesis seems to be the only explanation that fits the spectra seen. John Wenz, Popular Mechanics, 4 Apr. 2019

Word History

First Known Use

1904, in the meaning defined above

Time Traveler
The first known use of planetesimal hypothesis was in 1904

Dictionary Entries Near planetesimal hypothesis

Cite this Entry

“Planetesimal hypothesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/planetesimal%20hypothesis. Accessed 22 Nov. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!