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micrometeorite

American

[mahy-kroh-mee-tee-er-ahyt] / ˌmaɪ kroʊˈmi ti ərˌaɪt /

noun

plural

micrometeorites

Geology. a micrometeoroid that has traveled through Earth's atmosphere and fallen to the ground.

micrometeorite British

/ ˌmaɪkrəʊˈmiːtɪəˌraɪt /

noun

a tiny meteorite having a diameter of 10–40 micrometres, found esp in rainwater and seawater, having entered the atmosphere as a micrometeoroid (extremely small meteoroid)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

micrometeoritic

adjective

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Grimes said it was almost impossible to see a micrometeorite with the naked eye.

From BBC • Apr. 4, 2026

This intriguing asteroid is rich in carbon and has undergone significant space weathering caused by micrometeorite collisions and exposure to charged ions streaming from the sun.

From Science Daily • Dec. 1, 2023

It added that its equipment had registered "the event of a micrometeorite impact".

From Reuters • Aug. 19, 2023

“Everything at the surface is subject to harsh radiation, possible meteorite or micrometeorite bombardment and really large day-to-night temperature swings,” she said.

From New York Times • Oct. 29, 2022

Multiple layers also better protect against micrometeorite hits.

From Seattle Times • Dec. 23, 2021

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023