micrometeor


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Noun1.micrometeor - a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmospheremicrometeor - a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
meteorite - stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
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References in periodicals archive ?
By some estimates, over the course of a typical mission, space shuttles faced the risk of a 1-in-250 chance of being catastrophically damaged by a high-velocity micrometeor or piece of debris.
Solar cells can also be broken by micrometeor impact.