Search Result for "chromophore": 
Wordnet 3.0

NOUN (1)

1. the chemical group that gives color to a molecule; 



The Collaborative International Dictionary of English v.0.48:

Chromophore \Chro"mo*phore\, n. [Gr. ? color + fe`rein 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.
   [1913 Webster]


WordNet (r) 3.0 (2006):

chromophore
    n 1: the chemical group that gives color to a molecule