a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
同义词：micrometeoroid, micrometeor
micrometeorite详细解释
mi.cro.me.te.or.ite n.（名词）A tiny particle of meteoric dust, especially one of many that fall to the surface of the earth or moon.微陨星：微小的陨星颗粒，特指大量坠向地球或月球表面的微陨星
