Etymology

megagram

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Today it means: An SI unit of mass equal to 10⁶ grams. Symbol: Mg Full definition →

English gram ← Ancient Greek μέγᾰς (mégăs) ← Proto-Hellenic *mégas
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The story

  1. Proto-Indo-European*méǵh₂s
  2. Proto-Hellenic*mégas
  3. Ancient Greekμέγᾰς (mégăs)
  4. Englishmega-
  5. Englishgram
  6. English todaymegagram

From mega- + gram.

Etymology from Wiktionary, CC BY-SA 4.0.