• (a.) Of or pertaining to a natural order of plants, of which the violet is the type. It contains about twenty genera and two hundred and fifty species. • (a.) Resembling violets in color; bluish purple. Found on http://thinkexist.com/dictionary/meaning/violaceous/
Vi`o·la'ceous adjective [ Latin violaceus , from viola a violet.] 1. Resembling violets in color; bluish purple. 2. (Botany) Of or pertaining to a natural order of plants, of which the violet is the type. It contains about twenty genera and two hundred and fifty sp... Found on http://www.encyclo.co.uk/webster/V/27