micrometeoroid

noun

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

Examples of micrometeoroid in a Sentence

Recent Examples on the Web The Apollo landers and the Apollo rovers are still sitting on the lunar surface and have been probably bombarded by micrometeoroids, space dust flying around, definitely bombarded by radiation from the sun and cosmic sources. Sarah Matusek, The Christian Science Monitor, 31 Jan. 2024 Russian engineers determined the leak was most likely caused by an impact from a tiny fragment of rock from deep space, called a micrometeoroid, which ruptured a coolant line and sent a spray of snowflake-like particles into space as the Soyuz remained docked at the station. Stephen Clark, Ars Technica, 27 Sep. 2023 All of those elements often come from micrometeoroids and deep-space dust particles that are nearly constantly plunging into the upper atmosphere. Robin George Andrews, New York Times, 12 Dec. 2023 Public domain Among the instruments onboard Cassini was the Cosmic Dust Analyzer, whose data showed that the rings are being slowly but steadily polluted by a mix of rocky dust and other organic compounds—mostly coming from micrometeoroids in the Kuiper Belt. Jennifer Ouellette, Ars Technica, 12 May 2023 James Webb Space Telescope (JWST) has been hit by a micrometeoroid, which has damaged one of the 18 beryllium-gold segments that makes up its main 6.5-meter mirror. Jamie Carter, Forbes, 11 June 2022 The micrometeoroid that hit the James Webb Space Telescope in May caused significantly more damage than expected and will have a lasting impact on the telescope’s observations, according to a NASA report on the spacecraft’s performance. The Physics Arxiv Blog, Discover Magazine, 15 July 2022 Officials said Wednesday that a micrometeoroid about one millimeter wide caused the leak, per the New York Times’ Kenneth Chang. Will Sullivan, Smithsonian Magazine, 13 Jan. 2023 Russia plans to send a backup spacecraft to the International Space Station to retrieve three crew members whose Soyuz capsule was damaged, possibly by a micrometeoroid, Russia and NASA officials said Wednesday. Christian Davenport, Washington Post, 11 Jan. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'micrometeoroid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of micrometeoroid was in 1954

Dictionary Entries Near micrometeoroid

Cite this Entry

“Micrometeoroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometeoroid. Accessed 16 Apr. 2024.

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