(redirected from Nonchromogenic)
Also found in: Medical.


1. Chemistry A substance capable of conversion into a pigment or dye.
2. Biology A strongly pigmented or pigment-generating organelle, organ, or microorganism.

chro′mo·gen′ic (-jĕn′ĭk) adj.


1. (Chemistry) producing colour
2. (Chemistry) of or relating to a chromogen
3. (Photography) photog involving the use of chromogens rather than silver halide during processing to produce the image: chromogenic film.


(ˌkroʊ məˈdʒɛn ɪk)

1. producing color.
2. pertaining to a chromogen.
3. (of bacteria) producing some characteristic color or pigment that is useful as a means of identification.
Mentioned in ?
References in periodicals archive ?
a nonchromogenic bacterium isolated from clinical specimens.
neoaurum colonies also have a characteristic yellowish-orange smooth appearance that is distinct from the colony characteristics of nonchromogenic mycobacterium species.
Specific interactions of surfactants with lipoproteins have been successfully used to develop direct lipoprotein-C assays in which non-LDL lipoproteins are dissociated with a specific surfactant to allow the cholesterol to be accessed as a nonchromogenic product.