Definition of "micrometeor" []

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

WordNet. Princeton University. 2010.

• "So what would it be worth to you if I told you, I had on the Moon, right now, several million gallons of distilled water frozen into a anti-radiation/micrometeor habitat and inside were several million gallons of liquid oxygen and liquid hydrogen.. and a half gallon of He3?"
• "It could have been struck by a micrometeor or it could have been struck by some debris."
• "Because they want to make sure that while they're in space they want to make sure they didn't get dinged by a micrometeor."