chro·mo·gen /ˈkroməʤən/
色原體,媒染染料的一種
chro·mo·gen /ˈkroməʤən/ 名詞
Chro·mo·gen
1. Biol. Vegetable coloring matter other than green; chromule.
2. Chem. Any colored compound, supposed to contain one or more chromophores.
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chromogen
n : a compound that can be converted to a pigment