What is "chromogen"

Chromogen \Chro"mo*gen\, [Gr. ? color + -gen.]

1. (Biol.) Vegetable coloring matter other than green; chromule.

2. (Chem.) Any colored compound, supposed to contain one or more chromophores.

n. 1 (context chemistry English) Any substance that lacks colour, but can be converted into a pigment or dye. 2 (context biology English) A strongly pigmented organelle or organism.

n. a compound that can be converted to a pigment

Chromogen is a substance which can be readily converted into dye or other coloured compound. In other words, it can also be defined as any substance found in organic fluids that forms colour when oxidized. The presence of the entire three produces intense colour and the whole compound is called chromogen.