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

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Additionally, 22 micro-gram micrometeoroids are not common. Robert Lea, Space.com, 25 June 2025 As impressive as Hipparcos was, Gaia shattered the records set by its precursor—although not without challenges, such as precision-threatening sprays of stray light that leaked around the edges of the spacecraft’s sun shield and through a hole punched by an errant micrometeoroid. Lee Billings, Scientific American, 18 June 2025 This replenishment likely comes from collisions between dwarf planets, cometary nuclei, micrometeoroids and other flotsam and jetsam lurking in the dark of the debris disk. Keith Cooper, Space.com, 19 May 2025 And like the previous trials, the intense tests served an important purpose—in this case, making sure the shields coating LIFE habitat modules will withstand any hazardous micrometeoroid and orbital debris (MMOD) impacts. Andrew Paul, Popular Science, 24 Apr. 2025 See All Example Sentences for micrometeoroid

Word History

First Known Use

1954, in the meaning defined above

Time Traveler
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 11 Jul. 2025.

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