planetesimal hypothesis


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

Examples of planetesimal hypothesis in a Sentence

Recent Examples on the Web So far, the planetesimal hypothesis seems to be the only explanation that fits the spectra seen. John Wenz, Popular Mechanics, 4 Apr. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'planetesimal hypothesis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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.” Dictionary, Merriam-Webster, Accessed 18 May. 2024.

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