- a colorless, liquid, crystalline organic compound, CHN, the fundamental form of a group of bases, some of which are constituents of nucleic acid
- any of several basic substances produced by the decomposition of nucleoproteins and having a pyrimidine-type molecule, as thymine, cytosine, or uracil
Origin of pyrimidineGerman pyrimidin from pyridin: see pyridine
- A single-ringed, crystalline organic base, C4H4N2, that is the parent compound of a large group of biologically important compounds.
- Any of a group of substituted derivatives of pyrimidine, including the nitrogen bases uracil, cytosine, and thymine, which are components of nucleic acids. Barbiturates and certain other drugs are also pyrimidines.
Origin of pyrimidineAlteration of pyridine