Etymology

microgram

M3I1C3R1O1G2R1A1M3

Today it means: An SI unit of mass equal to 10⁻⁶ grams. Symbol: μg A unit of mass equal to one millionth of a gram, or 0.000 001 grams. Full definition →

English gram ← Ancient Greek μῑκρο- (mīkro-) ← Proto-Indo-European *mey-der.?
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The story

  1. Proto-Indo-European*mey-der.?
  2. Ancient Greekμῑκρός (mīkrós)
  3. Ancient Greekμῑκρο- (mīkro-)
  4. Englishmicro-
  5. Englishgram
  6. English todaymicrogram

From micro- + gram.

Etymology from Wiktionary, CC BY-SA 4.0.