micrometeoroid

mi·cro·me·te·or·oid

M0274300 (mī′krō-mē′tē-ə-roid′)n. A very small, often dust-sized meteoroid.

micrometeoroid

(ˈmaɪkrəʊˈmiːtɪəˌraɪt) astronomyn (Astronomy) an extremely small meteoroid

Thesaurus

Noun

1.

micrometeoroid - a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmospheremicrometeor, micrometeoritemeteorite - stony or metallic object that is the remains of a meteoroid that has reached the earth's surface