Purpureo-
Pronunciation : Pur*pu"re*o-.
Definition : Defn: A combining form signifying of a purple or purple-red color. Specif. (Chem.), used in designating certain brilliant purple-red compounds of cobaltic chloride and ammonia, similar to the roseocobaltic compounds. See Cobaltic.
Source : Webster's Unabridged Dictionary, 1913