[ Gr. &unr_; color + -gen. ] [ 1913 Webster ]
1. (Biol.) Vegetable coloring matter other than green; chromule. [ 1913 Webster ]
2. (Chem.) Any colored compound, supposed to contain one or more chromophores. [ 1913 Webster ]
a. (Biol.) Containing, or capable of forming, chromogen; as, chromogenic bacteria. [ 1913 Webster ]