noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of a class of bicyclic hydrocarbons in which a carbon atom has two single bonds in each of two rings; a form of spiro compound

Etymology

From German Spiran. By surface analysis, spiro- + -an.

Related phrases

single bondspiro compound

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