Guanin

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Guanin \Gua"nin\, n. (Physiol. Chem.)
     A crystalline substance ({C5H5N5O}) contained in guano. It is
     also a constituent of the liver, pancreas, and other glands
     in mammals.
     [1913 Webster]