What does "pyran" mean?

Any of a class of unsaturated heterocyclic compounds containing a ring of five carbon atoms, an oxygen atom and two double bonds; especially the simplest one, C₅H₆O.

Pyran

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Any of a class of unsaturated heterocyclic compounds containing a ring of five carbon atoms, an oxygen atom and two double bonds; especially the simplest one, C₅H₆O.

Etymology

pyre + -an

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