a. [ See Xantho-, and -gen. ] (Chem.) Producing a yellow color or compound; xanthic. See Xanthic acid, under Xanthic. [ 1913 Webster ]
a. [ Gr. pa`qos disease + the root of ge`nos birth. ] (Med. & Biol.) Of or pertaining to pathogeny; producting disease; as, a pathogenic organism; a pathogenic bacterium. [ 1913 Webster ]