Definitions

from The Century Dictionary.

  • noun The name given to phenmiazin, , and to its derivatives. It crystallizes in leaflets which melt at 48° and it boils at 243° C.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry A bicyclic aromatic heterocycle consisting of a benzene ring fused to one of pyrimidine; some of its derivatives are pharmaceuticals

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