| 释义 |
py·rim·i·dine
\pīˈriməˌdēn, -_də̇n; ˈpirəməˌdēn\ noun
(-s)
Etymology: International Scientific Vocabulary, alteration of pyridine; probably originally formed as German pyrimidin
1. : a crystalline feeble heterocyclic base C4H4N2 of penetrating odor that is usually prepared indirectly from barbituric acid; 1,3-diazine — compare purine, structural formula
2. : a derivative of pyrimidine; especially : a base (as cytosine) that is a component of nucleosides and nucleotides |