Rubiacin

1 definition found

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

  Rubiacin \Ru"bi*a*cin\, n. [L. rubia madder, fr. rubeus red.]
     (Chem)
     A substance found in madder root, and probably identical with
     ruberythrinic acid.
     [1913 Webster]