ˌ ̷ ̷ ̷ ̷ at meta- +ˈkrōsə̇s noun
( plural metachro·ses -ˌsēz)
Etymology: New Latin, from meta- + Greek chrōsis coloring, from chrōs color — more at chromatic
: the power of some animals (as many fishes and reptiles) to change color voluntarily by the expansion of special pigment cells