micrometeorite
noun
mi·cro·me·te·or·ite
ˌmī-krō-ˈmē-tē-ə-ˌrīt 
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
Examples of micrometeorite in a Sentence
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However, to do this, James said, micrometeorites need to be travelling at about 44,000 miles per hour (around 70,000 km per hour).
—
Robert Lea, Space.com, 25 June 2025
Finally, most of the meteorites that do strike the planet are, by the time of impact, micrometeorites—too small to do any damage at all.
—Jeffrey Kluger, Time, 27 June 2025
This lack of shielding also makes the chip more vulnerable to impacts with micrometeorites, which zip at high speed throughout the solar system.
—IEEE Spectrum, 28 July 2011
The other idea is that a micrometeorite hit the satellite, releasing a small cloud of plasma and radio waves.
—Sara Hashemi, Smithsonian Magazine, 27 June 2025
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Robert Lea, Space.com, 25 June 2025
Finally, most of the meteorites that do strike the planet are, by the time of impact, micrometeorites—too small to do any damage at all.
—Jeffrey Kluger, Time, 27 June 2025
This lack of shielding also makes the chip more vulnerable to impacts with micrometeorites, which zip at high speed throughout the solar system.
—IEEE Spectrum, 28 July 2011
The other idea is that a micrometeorite hit the satellite, releasing a small cloud of plasma and radio waves.
—Sara Hashemi, Smithsonian Magazine, 27 June 2025
See All Example Sentences for micrometeorite
Cite this Entry
“Micrometeorite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometeorite. Accessed 20 Aug. 2025.
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micrometeorite
noun
mi·cro·me·te·or·ite
ˌmī-krō-ˈmēt-ē-ə-ˌrīt
: a very small particle in space
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