Rufiopin

1 definition found

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

  Rufiopin \Ru`fi*o"pin\, n. [L. rufus reddish + opianic.] (Chem.)
     A yellowish red crystalline substance related to anthracene,
     and obtained from opianic acid.
     [1913 Webster]