色素细胞

Pigment \Pig"ment\, n. [L. pigmentum, fr. the root of pingere to
paint: cf. F. pigment. See {Paint}, and cf. {Pimento},
{Orpiment}.]
1. Any material from which a dye, a paint, or the like, may
be prepared; particularly, the refined and purified
coloring matter ready for mixing with an appropriate
vehicle.

2. (Physiol.) Any one of the colored substances found in
animal and vegetable tissues and fluids, as bilirubin,
urobilin, chlorophyll, etc.

3. Wine flavored with species and honey. --Sir W. Scott.

{Pigment cell} (Physiol.), a small cell containing coloring
matter, as the pigmented epithelial cells of the choroid
and iris, or the pigmented connective tissue cells in the
skin of fishes, reptiles, etc.