accretionary hypothesis

noun

Definition of accretionary hypothesis

: any explanation of the origin of the earth that involves the hypothesis of gradual growth by the gravitational infall of solid bodies (as asteroids, planetesimals, or meteorites) — compare planetesimal hypothesis

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First Known Use of accretionary hypothesis

1905, in the meaning defined above

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The first known use of accretionary hypothesis was in 1905

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Dictionary Entries Near accretionary hypothesis

accretional

accretionary hypothesis

accretion borer

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Cite this Entry

“Accretionary hypothesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/accretionary%20hypothesis. Accessed 16 Aug. 2022.

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