noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The bicyclic organic compound bicyclo[2.2.2]octa-2,5,7-triene countable, uncountable

Etymology

From barrel + -ene, from the resemblance to a barrel, with the staves being three ethylene units attached to two methine groups.

Related phrases

organic compound

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.