D defs.my
Entry 1 sense Webster, 1913

Guanin

· Gua·nin · IPA
01 n. A crystalline substance (C5H5N5O) contained in guano. It is also a constituent of the liver, pancreas, and other glands in mammals.
  1. 1.
    A crystalline substance (C5H5N5O) contained in guano. It is also a constituent of the liver, pancreas, and other glands in mammals.(Physiol. Chem.)