·- 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.
Purpŭrĕo, ōnis, m. [purpura], a Roman surname , Liv. 35, 41. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.