IPA: /ˌmaɪ.kroʊˈmiː.tə.raɪt/
KK: /maɪkroʊˈmiːtəraɪt/
A very small piece of dust or rock that comes from space and falls to the Earth or the Moon.
Scientists study micrometeorites to learn more about the early solar system.
Micrometeorite → It is formed from "micro-" (from Greek "mikros", meaning small) and "meteorite" (from Greek "meteōros", meaning high in the air, and "lithos", meaning stone). The word describes a small stone that originates from the atmosphere or outer space.
Think of something 'small' ('micro-') that is a 'stone' ('meteorite') from the sky — that's what a micrometeorite is.