mi·​cro·​me·​te·​or·​ite | \ ˌmī-krō-ˈmē-tē-ə-ˌrīt How to pronounce micrometeorite (audio) \

Definition of micrometeorite

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

Other Words from micrometeorite

micrometeoritic \ ˌmī-​krō-​ˌmē-​tē-​ə-​ˈri-​tik How to pronounce micrometeorite (audio) \ adjective

Examples of micrometeorite in a Sentence

Recent Examples on the Web Moon dirt is full of tiny, glass fragments from micrometeorite impacts that got everywhere in the Apollo lunar landers and wore down the moonwalkers' spacesuits. Bradford Betz, Fox News, 13 May 2022 Moon dirt is full of tiny, glass fragments from micrometeorite impacts that got everywhere in the Apollo lunar landers and wore down the moonwalkers’ spacesuits. Marcia Dunn, Orlando Sentinel, 12 May 2022 The rapid melting and cooling caused by micrometeorite impacts on the regolith creates small globs of glassy material. John Timmer, Ars Technica, 12 May 2022 Last year, a micrometeorite shot right through the station’s robotic arm, leaving a bullet-sized hole. Washington Post, 27 Jan. 2022 Multiple layers also better protect against micrometeorite hits. Fox News, 24 Dec. 2021 Now, in a study recently published in Earth and Planetary Science Letters, a team measuring micrometeorite accumulation in the pristine snow of Antarctica has provided the best-yet estimate for incoming extraterrestrial debris. Sarah Derouin, Scientific American, 29 Apr. 2021 Although both poles have potential for micrometeorite research, Jean Duprat, a cosmochemist at the University of Paris–Saclay, prefers the southern ice. Sarah Derouin, Scientific American, 29 Apr. 2021 Most of these molecules are likely stored in the voids between moon dust and other particles or entombed in the glassy residue of of micrometeorite impacts. Marcia Dunn, The Christian Science Monitor, 27 Oct. 2020 See More

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

First Known Use of micrometeorite

1949, in the meaning defined at sense 1

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The first known use of micrometeorite was in 1949

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Last Updated

22 May 2022

Cite this Entry

“Micrometeorite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometeorite. Accessed 5 Jul. 2022.

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More from Merriam-Webster on micrometeorite

Britannica.com: Encyclopedia article about micrometeorite


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