noun. A chemical group capable of selective light absorption resulting in the coloration of certain organic compounds.

noun. A chromophorous substance.

noun. Any chemical group or residue (as NO2; N2; or O2) which imparts some decided color to the compound of which it is an ingredient.

noun. that part of the molecule of a dye responsible for its colour

noun. (more generally) the group of atoms in a molecule in which the electronic transition responsible for a given spectral band is located

noun. the chemical group that gives color to a molecule

"These single - and double-cone sensitivities were estimated based on two assumptions: (1) the visual pigment λ max for each gene is the same for all species; and (2) the chromophore is A1 (11 - cis retinal) for all species."

luminophore  

chromophoric  

chemical group  group  radical  

adenoma  bilayer  carbanion  conformations  digraph  

n2