English version

pigment in Biology topic

From Longman Dictionary of Contemporary Englishpigmentpig‧ment /ˈpɪɡmənt/ noun [countable, uncountable]  AVPa natural substance that makes skin, hair, plants etc a particular colour Melanin is the dark brown pigment of the hair, skin and eyes. The artist Sandy Lee uses natural pigments in her work.
Examples from the Corpus
pigmentThe robe, too, is painted in Prussian blue, a pigment not introduced until the eighteenth century.So a long hot summer with bright, sunny days well into September will result in a high concentration of both pigments.This can require a week to die down, and is followed by severe peeling that leaves no brown pigment remaining.Those cells which can form pigment migrate beneath the skin and enter all the feather germs.He likens creation to a painter mixing just four pigments to form the likenesses of all things.These are clear varnishes to which either dyestuffs or transparent pigments, or both, have been added.The two measurements are necessary, since visual pigments are light sensitive and have characteristic absorption spectra under these different light conditions.