micrometeorite vs micrometeor

micrometeorite and micrometeor both are nouns.

Word	Noun	Adjective	Verb	Adverb
micrometeorite	Yes	No	No	No
micrometeor	Yes	No	No	No

As nouns, micrometeorite and micrometeor are synonyms defined as:

micrometeorite and micrometeor: a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere

Other synonyms of micrometeorite include micrometeoroid.

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