The natural coloring matter
* PIGMENT [uncountable and countable] = a 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. ( Longman Dictionary ) * PIGMENT = the natural colouring matter of animal or plant tissue. ==> Carotenoid pigments are red, orange, or yellow. ( Oxford Dictionary ) * PIGMENT = a substance used for colouring or painting, especially a dry powder, which when mixed with oil, water, or another medium constitutes a paint or ink. ==> All the frescoes are painted with earth pigments ( Oxford Dictionary )
