micrometeoroid

noun

mi·​cro·​me·​te·​or·​oid ˌmī-krō-ˈmē-tē-ə-ˌrȯid 

: micrometeorite sense 2

Examples of micrometeoroid in a Sentence

Recent Examples on the Web

At that pace, even a tiny micrometeoroid has the ability to impart a significant kinetic blow upon striking a spacecraft en route to the moon, with potentially disastrous results for the astronaut crew inside. — Anthony Wood, Space.com, 7 June 2026

Separate tests examined how the thermal protection system performs when its surface is damaged, simulating impacts from debris or micrometeoroids. — Josh Dinner, Space.com, 6 May 2026

The flashes occurred as tiny fragments of cosmic material, or micrometeoroids, impacted the lunar surface. — Stephen Clark, ArsTechnica, 9 Apr. 2026

Product design Composites have long been anticipated as a solution for lightweight micrometeoroid and orbital debris (MMOD) shielding protection, said Trevor Smith, CEO of Atomic-6. — Leonard David, Space.com, 16 Oct. 2025

Word History

First Known Use

1954, in the meaning defined above