Definition of “pigment” - English Dictionary

“pigment” in British English

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pigmentnoun [ C or U ]

uk /ˈpɪɡ.mənt/ us /ˈpɪɡ.mənt/

a substance that gives something a particular colour when it is present in it or is added to it:

Melanin is the dark brown pigment of the hair, skin, and eyes that is present in varying amounts in every human being.
Pigment is mixed into oil, glue, egg, etc. to make different types of paint.
pigmented
adjective uk /pɪɡˈmen.tɪd/ us /ˈpɪɡ.mən.t̬ɪd/

pigmented tissue/skin/areas

(Definition of “pigment” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“pigment” in American English

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pigmentnoun [ C/U ]

us /ˈpɪɡ·mənt/

biology a natural substance that produces color in animals and plants, such as of skin, hair, and leaves

Pigment is also the substance in a paint or dye that gives it its color.

pigmentation
noun [ U ] us /ˌpɪɡ·mənˈteɪ·ʃən/

(Definition of “pigment” from the Cambridge Academic Content Dictionary © Cambridge University Press)