pigment-, pigmento- +
(Latin: "paint"; coloring matter involving both animals and plants)
This unit is directly related to the pict- family of words.
2. Loss of color (pigment) from the skin, mucous membranes, hair, or retina of the eyes.
Hyperpigmentation is primarily a cosmetic concern that can be covered with make-up, although in some cases; such as, the café au lait spots associated with neurofibromatosis, it can be a sign of an underlying medical problem.
If treatment of hyperpigmentation is desired, a dermatologist may be able to use dermabrasion, laser treatments, or bleaching agents to effect changes.
It can be complete or partial and may result from trauma, inflammation, and certain infections.
These blisters then heal, but leave dark hyperpigmented streaks and marble-like whorls on the skin. Other key features include dental and nail abnormalities, bald patches and, in about one-third of cases, mental retardation.
The name came from the erroneous idea that the skin cells were incontinent of pigment and could not contain it normally.
2. Pigment involved in photosynthesis in plants which includes chlorophyll, carotenoids, and phycobilins.
2. A natural substance in plant or animal tissue that gives it its color.
3. A substance, such as chlorophyll or melanin, that produces a characteristic color in plant or animal tissue.
4. Etymology: from Latin pigmentum, "coloring matter, pigment, paint"; from the root of pingere, "to color, to paint".
2. Supplied with pigments.
2. The presence of pigment or the coloring of the skin, hair, mucous membranes, and retina of the eyes.
Pigmentation is due to the deposition of melanin which is a coloring matter. The melanin is produced by specialized cells called melanocytes.