noun. An atomic group the presence of which in the molecule of a compound is supposed to cause the exhibition of fluorescence. Such groupings are the ring structures in pyrone, acridine, anthracene, etc.

noun. A molecule or functional group which is capable of fluorescence.

"Maturation of the wild-type fluorophore is quite efficient at 28 degrees, but increasing the temperature to 37 degrees substantially reduces overall maturation and results in decreased fluorescence."

FISH  chromophore  fluorochrome  

fluorophoric