Term Name:	pyrimidine nucleobase catabolic process
Synonyms:	pyrimidine base breakdown, pyrimidine base catabolic process, pyrimidine base catabolism, pyrimidine base degradation
Definition:	The chemical reactions and pathways resulting in the breakdown of pyrimidine nucleobases, 1,3-diazine, organic nitrogenous bases.
Ontology:	GO: Biological Process [GO:0006208]    QuickGO    AmiGO