carotenoid UK /kəˈɹɒtɪˌnɔɪd/US /kəˈɹɑtɪˌnɔɪd/adjective 1noun 1forms 1 adjective1 •Of or relating to such a class of pigments. noun1 •Any of a class of yellow to red organic pigments including the carotenes and xanthophylls. formscarotenoids
