Etymology

heptafluoride

H4E1P3T1A1F4L1U1O1R1I1D2E1

Today it means: any fluoride containing seven fluorine atoms in each molecule Full definition →

English fluoride ← Ancient Greek ἑπτᾰ́ (heptắ) ← Proto-Hellenic *heptə́
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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. Englishhepta-
  7. Englishfluoride
  8. English todayheptafluoride

From hepta- + fluoride.

Etymology from Wiktionary, CC BY-SA 4.0.