Etymology

zeptogram

Z10E1P3T1O1G2R1A1M3

Today it means: An SI unit of mass equal to 10⁻²¹ grams. Symbol: zg Full definition →

English gram ← Ancient Greek ἑπτᾰ́ (heptắ) ← Proto-Hellenic *heptə́
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Afroasiatic*sṗɣ?
  2. Proto-Semitic*šabʕ-bor.?
  3. Proto-Indo-European*septḿ̥
  4. Proto-Hellenic*heptə́
  5. Ancient Greekἑπτᾰ́ (heptắ)
  6. Englishzepto-
  7. Englishgram
  8. English todayzeptogram

From zepto- + gram.

Etymology from Wiktionary, CC BY-SA 4.0.