planetesimal hypothesis

noun

Definition of 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, "Scientists Think They've Found a Dead Planetary Core Orbiting a Dead Star," 4 Apr. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'planetesimal hypothesis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of planetesimal hypothesis

1904, in the meaning defined above

Keep scrolling for more

Learn More about planetesimal hypothesis

Time Traveler for planetesimal hypothesis

Time Traveler

The first known use of planetesimal hypothesis was in 1904

See more words from the same year

Statistics for planetesimal hypothesis

Cite this Entry

“Planetesimal hypothesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/planetesimal%20hypothesis. Accessed 4 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on planetesimal hypothesis

What made you want to look up planetesimal hypothesis? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

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