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PIGMENTATION
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I. (noun)
Sense 1
Meaning:
Coloration of living tissues by pigment
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("pigmentation" is a kind of...):
coloration; colouration (appearance with regard to color)
Hyponyms (each of the following is a kind of "pigmentation"):
chromatism (abnormal pigmentation)
melanoderma (abnormally dark skin caused by increased deposits of melatonin)
Antonym:
depigmentation (absence or loss of pigmentation (or less than normal pigmentation) in the skin or hair)
Derivation:
pigment (acquire pigment; become colored or imbued)
Sense 2
Meaning:
The deposition of pigment in animals or plants or human beings
Classified under:
Nouns denoting natural processes
Hypernyms ("pigmentation" is a kind of...):
deposit; deposition (the natural process of laying down a deposit of something)
Derivation:
pigment (acquire pigment; become colored or imbued)
Context examples:
It is characterized by hypopigmentation of the skin, hair, and eyes, resulting in very fair skin, white colored hair, and reduced pigmentation in the iris and retina.
(Oculocutaneous Albinism, NCI Thesaurus)
It may lead to skin pigmentation, liver failure, heart failure, and hypogonadism.
(HFE-Associated Hereditary Hemochromatosis, NCI Thesaurus)
Pigmentation; the coloring of the skin, hair, mucous membranes, and retina of the eye.
(Pigmentation, NCI Thesaurus)
Individuals who have dark constitutive pigmentation but become noticeably darker with sun exposure, especially light complected black individuals, those of Indian descent.
(Fitzpatrick Skin Type V, NCI Thesaurus/CDISC)
It is characterized by pleomorphism, melanin pigmentation, a high mitotic rate, necrosis, and hemorrhage.
(Central Nervous System Melanoma, NCI Thesaurus)
One way to increase blood vitamin D levels is to increase sun exposure, but that isn’t always possible in urban environments, or in people with darker skin pigmentation.
(Vitamin D may protect against pollution-associated asthma symptoms in obese children, National Institutes of Health)
An acquired pigmentation of the conjunctival epithelium associated with benign or atypical melanocytic hyperplasia.
(Conjunctival Primary Acquired Melanosis, NCI Thesaurus)
A rare genetic disorder characterized by nail dystrophy, reticulated skin pigmentation especially on the neck and chest, and oral leukoplakia.
(Dyskeratosis Congenita, NCI Thesaurus)
Yellow pigmentation of the skin, mucous membranes and eyes due to hyperbilirubinemia caused by inspissated bile plugs in the bile ducts during the perinatal period.
(Perinatal Jaundice due to Inspissated Bile Syndrome, NCI Thesaurus)
Because equatorial regions receive approximately two times more UVR than more temperate regions, darker pigmentation in people from these regions is thought to reduce skin damage and cancer.
(New regions of the human genome linked to skin color variation in some African populations, National Institutes of Health)
