micrometeorite

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere

From micro- + meteorite (micro- + meteor + -ite).

You know, of course, that we are constantly being bombarded by cosmic dust, the micrometeorites that always prove troublesome to the Earth satellites and space platforms. — The Secret of the Ninth Planet, Donald A. Wollheim

micrometeoroid, micrometeor

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