- either of two heterocyclic ketones having the formula C5H4O2.
Origin of pyrone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- either of two heterocyclic compounds that have a ring containing five carbon atoms and one oxygen atom with two double bonds and a second oxygen atom attached to a carbon atom in either the ortho -position (alpha pyrone) or the para -position (gamma pyrone)
- any one of a class of compounds that are substituted derivatives of a pyrone