Etymology

pentachloro

P3E1N1T1A1C3H4L1O1R1O1

Today it means: Five chlorine atoms in a compound Full definition →

English chloro- ← Ancient Greek πεντᾰ- (pentă-) ← Proto-Hellenic *pénkʷe
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Indo-European*pénkʷe
  2. Proto-Hellenic*pénkʷe
  3. Ancient Greekπέντε (pénte)
  4. Ancient Greekπεντᾰ- (pentă-)
  5. Englishpenta-
  6. Englishchloro-
  7. English todaypentachloro

From penta- + chloro-.

Etymology from Wiktionary, CC BY-SA 4.0.