chro·mo·phore /ˈkroməˌfor, ˌfɔr/
  發色團; 色基
  chro·mo·phore /ˈkroməˌfo(ə)r, ˌfɔ(ə)r/ 名詞
  生色團,發色團,色基
  Chro·mo·phore n.  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.
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  chromophore
       n : the chemical group that gives color to a molecule