pyrone(redirected from pyranone)
Also found in: Medical.
1. (Elements & Compounds) 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)
2. (Elements & Compounds) any one of a class of compounds that are substituted derivatives of a pyrone