Ma'anar ƙamus na "micrometeoroid" wani ɗan ƙaramin barbashi ne, wanda girmansa ya kai daga 'yan micrometers zuwa millimeters, wanda ke tafiya ta sararin samaniya kuma yana iya yin karo da abubuwa a hanyarsa, kamar jirgin sama ko tauraron dan adam. Micrometeoroids sau da yawa tarkace ne daga tauraro mai wutsiya, asteroids, ko wasu jikunan sama, kuma suna iya haifar da lalacewa ko zazzagewa ga saman da suke tasiri.