IPA: /ˌmaɪ.kroʊˈmiː.tə.rɔɪd/
KK: /maɪkroʊˈmiːtərɔɪd/
A very small piece of space rock or dust that travels through space.
Scientists study micrometeoroids to understand the composition of our solar system.
Micrometeoroid → It is formed from "micro-" (from Greek "mikros", meaning small) and "meteoroid" (from Greek "meteōron", meaning something high in the air or a celestial object). The word "micrometeoroid" refers to a small celestial object or particle that travels through space.
Think of 'small' ('micro-') celestial objects ('meteoroid') when you hear 'micrometeoroid'.
No commonly confused words.