Etymology

tropylium

T1R1O1P3Y4L1I1U1M3

Today it means: The delocalized carbenium ion cycloheptatrienylium, C₇H₇⁺, derived from cycloheptatriene, or any of its derivatives. Full definition →

Ancient Greek ῡ̔́λη (hū́lē) ← Proto-Indo-European *swel-der.? ← English tropine
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Englishtropane
  2. Englishtropine
  3. Proto-Indo-European*swel-der.?
  4. Ancient Greekῡ̔́λη (hū́lē)
  5. English todaytropylium

From tropine + -yl + -ium.

Etymology from Wiktionary, CC BY-SA 4.0.