Definition of micrometeor in English:

micrometeor

Pronunciation /ˌmʌɪkrə(ʊ)ˈmiːtɪə/ /ˌmʌɪkrə(ʊ)ˈmiːtɪɔː/

noun

Astronomy
  • Micrometeoroid.

Origin

1930s; earliest use found in Cedar Rapids (Iowa) Tribune. From micro- + meteor.