Etymology

micrometeoroid

M3I1C3R1O1M3E1T1E1O1R1O1I1D2

Today it means: an extraterrestrial particle less than a millimeter in size Full definition →

English meteoroid ← Ancient Greek εἶδος (eîdos) ← Proto-Hellenic *wéidos
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The story

  1. Proto-Indo-European*mey-der.?
  2. Ancient Greekμῑκρός (mīkrós)
  3. Ancient Greekμῑκρο- (mīkro-)
  4. Englishmicro-
  5. Englishmeteor
  6. Proto-Indo-European*weyd-
  7. Proto-Indo-European*wéydos
  8. Proto-Hellenic*wéidos
  9. Ancient Greekεἶδος (eîdos)
  10. Englishmeteoroid
  11. English todaymicrometeoroid

From micro- + meteoroid.

Etymology from Wiktionary, CC BY-SA 4.0.