pigmentation

noun

1. coloration, especially of the skin.
2. Biology. coloration with or deposition of pigment.

noun

1. coloration in plants, animals, or man caused by the presence of pigments
2. the deposition of pigment in animals, plants, or man

n.1866, from pigment + -ation. Perhaps modeled on French. n.

1. Coloration of tissues by pigment.
2. Deposition of pigment by cells.