micrometeor mic·ro·me·teor uncommon noun 1. a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere Synonymsmicrometeoritemicrometeoroid Related words Word family micrometeoritemicrometeoriticmicrometeoricmicrometeoroid Broader terms meteorite WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
