Vocabulary Word
Word: pigment
Definition: coloring matter (usually powder to be mixed with water or oil)
Definition: coloring matter (usually powder to be mixed with water or oil)
Sentences Containing 'pigment'
But in some of the most successful of these you will generally find spots of intensely dark pigment.
Jourdain, descend even a step lower and find aggregates of pigment-cells, apparently serving as organs of vision, without any nerves, and resting merely on sarcodic tissue.
In certain star-fishes, small depressions in the layer of pigment which surrounds the nerve are filled, as described by the author just quoted, with transparent gelatinous matter, projecting with a convex surface, like the cornea in the higher animals.
Within the highest division of the animal kingdom, namely, the Vertebrata, we can start from an eye so simple, that it consists, as in the lancelet, of a little sack of transparent skin, furnished with a nerve and lined with pigment, but destitute of any other apparatus.
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