Noun
pyridone (plural pyridones)
(organic chemistry) Either of two isomeric derivatives of pyridine having a carbonyl group either ortho- or para- to the nitrogen atom; in its tautomeric form, it is the pyridine analogue of phenol.
Colonies of Arthrobacter have a greenish metallic center on mineral salts pyridone broth incubated at convert. Source: Internet
Mineral salts pyridone broth is a selective medium for bacteria that can metabolize pyridone (which is an unusual carbon source that a select few types of bacteria can use). Source: Internet