Roseo-

1 definition found

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

  Roseo- \Ro"se*o-\ (Chem.)
     A prefix (also used adjectively) signifying rose-red;
     specifically used to designate certain rose-red compounds
     (called roseo-cobaltic compounds) of cobalt with ammonia. Cf.
     {Luteo}-.
     [1913 Webster]