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单词 melanosis
释义

melanosis


mel·a·no·sis

M0204800 (mĕl′ə-nō′sĭs)n. pl. mel·a·no·ses (-sēz) Abnormally dark pigmentation of the skin or other tissues, resulting from a disorder of pigment metabolism. Also called melanism.
mel′a·not′ic (-nŏt′ĭk) adj.

melanosis

(ˌmɛləˈnəʊsɪs) or

melanism

n (Pathology) pathol a skin condition characterized by excessive deposits of melanin melanotic adj

mel•a•no•sis

(ˌmɛl əˈnoʊ sɪs)

n., pl. -ses (-siz) 1. abnormal deposition or development of black or dark pigment in the tissues. 2. a discoloration caused by this. [1815–25; < Late Greek melánōsis a becoming black. See melano-, -osis]

melanosis

abnormal production and presence of melanin, a black pigment, in the body tissues. — melanotic, adj.See also: Blackening and Blackness
Thesaurus
Noun1.melanosis - a condition characterized by abnormal deposits of melanin (especially in the skin)melanismdisease of the skin, skin disease, skin disorder - a disease affecting the skin
Translations

Melanosis


Melanosis

 

the intensified formation and deposit in organs and tissues of a dark brown or black pigment of the melanin group (normally present in the skin, retina, and meninges).

A distinction is made between congenital melanosis and acquired melanosis. The former includes congenital melanosis of the skin (melanoderma), manifested by freckles or pigmented birthmarks. Acquired melanosis frequently develops as a result of a change in endocrine function (adrenal, pituitary, or gonadal). The pigmentation may be diffuse (for example, in Addison’s disease) or circumscribed (for example, during pregnancy, on the face and around the nipples). The condition may also be caused by systemic poisoning by hydrocarbons (toxic melanoderma) or by physical, mechanical, or chemical irritation (light, heat, the distillate products of coal).

melanosis


melanosis

 [mel″ah-no´sis] 1. disordered melanin" >melanin production, with darkening of the skin; called also melanism.2. a disorder of pigment metabolism.melanosis co´li brown-black discoloration of the mucosa of the colon.melanosis i´ridis (melanosis of the iris) abnormal pigmentation of the iris by infiltration of melanoblasts.

mel·a·no·sis

(mel'ă-nō'sis), Abnormal dark brown or brown-black pigmentation of various tissues or organs, as the result of melanin or, in some situations, other substances that resemble melanin to varying degrees; for example, melanosis of the skin may occur in widespread metastatic melanoma, sunburn, during pregnancy, and as a result of chronic infections. [melano- + G. -osis, condition]

melanosis

(mĕl′ə-nō′sĭs)n. pl. melano·ses (-sēz) Abnormally dark pigmentation of the skin or other tissues, resulting from a disorder of pigment metabolism. Also called melanism.
mel′a·not′ic (-nŏt′ĭk) adj.

melanosis

A general term for the deposition of melanin or melanin-like pigment (e.g., ceroid, lipofuscin) in tissues.

mel·a·no·sis

(mel'ă-nō'sis) Abnormal dark brown or brown-black pigmentation of various tissues or organs, as the result of melanin or, in some situations, other substances that resemble melanin to varying degrees; e.g., melanosis of the skin may occur in widespread metastatic melanoma, sunburn, during pregnancy, and as a result of chronic infections. [melano- + G. -osis, condition]

melanosis

Abnormal pigmentation of the tissues from excessive deposition of MELANIN. Melanosis coli is pigmentation of areas of the COLON due to an accumulation of MACROPHAGES containing melanin or a similar pigment.

melanosis

An abnormal accumulation of melanin pigment in the skin or other tissues. If there is a larger quantity than normal of pigment in the tissues of the eye, the condition is referred to as melanosis bulbi (melanosis oculi) or primary acquired melanosis when on the conjunctival epithelium and limbus. It may extend onto the peripheral cornea. It may be benign or become malignant, in which case nodules appear and excision or cryotherapy is required. See naevus of Ota.

mel·a·no·sis

(mel'ă-nō'sis) Abnormal dark brown or brown-black pigmentation of various tissues or organs, as the result of melanin or, in some situations, other substances that resemble melanin to varying degrees.[melano- + G. -osis, condition]

melanosis


  • noun

Synonyms for melanosis

noun a condition characterized by abnormal deposits of melanin (especially in the skin)

Synonyms

  • melanism

Related Words

  • disease of the skin
  • skin disease
  • skin disorder
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