mi·​cro·​me·​te·​or·​oid | \ ˌmī-krō-ˈmē-tē-ə-ˌrȯid How to pronounce micrometeoroid (audio) \

Definition of micrometeoroid

Examples of micrometeoroid in a Sentence

Recent Examples on the Web Most of this material is being delivered by micrometeoroids from the Kuiper belt, a distant source of icy objects beyond the orbit of Neptune. Quanta Magazine, 26 Nov. 2019 These are known as micrometeoroids or simply space dust. John Meyer, The Know, 11 Nov. 2019 Every morning, at dawn, the planet is subjected to a spray of micrometeoroids, according to NASA. Jennifer Leman, Popular Mechanics, 9 Nov. 2019 The new suit is also slightly sleeker, allowing a greater range of motion while still protecting the astronauts from radiation, temperature extremes, and micrometeoroids. Ashley Strickland, CNN, 15 Oct. 2019 Given these two figures, and the bombardment rate by micrometeoroids, the rings must be young, the idea goes. Mike Wall, Scientific American, 17 Sep. 2019 However, the study's lead author, Aurélien Crida, disputes that, citing the bombardment rate of tiny meteorites (known as micrometeoroids) and the weight of the rings. Fox News, 17 Sep. 2019 Currently, very little data exists that describe what effect temperature extremes, lunar dust, micrometeoroids, solar radiation, etc. Joe Pappalardo, Popular Mechanics, 23 Mar. 2018 What works in Webb's favor is the micro part of micrometeoroid: even at high speed, the particles don't have the mass to do catastrophic damage. Jeffrey Kluger, Time, 22 June 2017

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

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First Known Use of micrometeoroid

1954, in the meaning defined above

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The first known use of micrometeoroid was in 1954

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Cite this Entry

“Micrometeoroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometeoroid. Accessed 20 Sep. 2021.

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Britannica.com: Encyclopedia article about micrometeoroid


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