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单词 melanism
释义

WordReference Random House Unabridged Dictionary of American English © 2024
mel•a•nism  (melə niz′əm),USA pronunciation n. 
  1. Physical Anthropology, Animal Behavior[Ethnol.]the condition in human beings of having a high amount of melanin granules in the skin, hair, and eyes.
  2. [Zool.]the condition in which an unusually high concentration of melanin occurs in the skin, plumage, or pelage of an animal.
  • melan- + -ism 1835–45
mel′a•nistic, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
melanism /ˈmɛləˌnɪzəm/ n
  1. the condition in man and animals of having dark-coloured or black skin, feathers, etc. Industrial melanism is the occurrence of dark varieties of animals, esp moths, in smoke-blackened industrial regions, in which they are well camouflaged
  2. another name for melanosis

ˌmelaˈnistic adj
WordReference Random House Unabridged Dictionary of American English © 2024
mel•a•no•sis  (mel′ə nōsis),USA pronunciation n. [Pathol.]
  1. Pathologyabnormal deposition or development of black or dark pigment in the tissues.
  2. Pathologya discoloration caused by this.
  • Late Greek melánōsis a becoming black. See melan-, -osis
  • Neo-Latin
  • 1815–25

Collins Concise English Dictionary © HarperCollins Publishers::
melanosis /ˌmɛləˈnəʊsɪs/, melanism /ˈmɛləˌnɪzəm/ n
  1. a skin condition characterized by excessive deposits of melanin

melanotic /ˌmɛləˈnɒtɪk/ adj
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