micrometeorite

noun

mi·​cro·​me·​te·​or·​ite ˌmī-krō-ˈmē-tē-ə-ˌrīt How to pronounce micrometeorite (audio)
1
: a meteorite so small that it can pass through the earth's atmosphere without becoming intensely heated
2
: a very small particle in interplanetary space
micrometeoritic adjective

Examples of micrometeorite in a Sentence

Recent Examples on the Web
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Research published in the journal Icarus in 2023 looked at the accumulation rate of dark micrometeorite dust on the otherwise shiny rings and found that the rings were young, cosmically speaking: just 100 million to 400 million years in age. Phil Plait, Scientific American, 23 Jan. 2025 Space isn't for the weak; it's filled with radiation, micrometeorites, and who knows what else. Monisha Ravisetti, Space.com, 16 Jan. 2025 There are micrometeorites and occasional larger impacts. Matthew Hutson, The New Yorker, 24 Sep. 2024 The moon is bombarded by micrometeorites, which continuously eject icy material. science.org, 19 Sep. 2024 See all Example Sentences for micrometeorite 

Word History

First Known Use

1949, in the meaning defined at sense 1

Time Traveler
The first known use of micrometeorite was in 1949

Dictionary Entries Near micrometeorite

Cite this Entry

“Micrometeorite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometeorite. Accessed 31 Jan. 2025.

Kids Definition

micrometeorite

noun
mi·​cro·​me·​te·​or·​ite ˌmī-krō-ˈmēt-ē-ə-ˌrīt How to pronounce micrometeorite (audio)
: a very small particle in space

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