noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A hypothetical hydrocarbon, C₄H₈, analogous to trimethylene, and regarded as the base of well-known series or derivatives.
2. 2
   An isomeric radical used to designate certain compounds which are really related to butylene.

Etymology

From tetra- + methylene.

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