Definitions for: Chromophore

[n] the chemical group that gives color to a molecule

Webster (1913) Definition: Chro"mo*phore, n. [Gr. ? color + ? to bear.]
(Chem.)
Any chemical group or residue (as NO2; N2; or O2) which
imparts some decided color to the compound of which it is an
ingredient.

See Also: chemical group, dye, dyestuff, group, radical