amyloid /ˈæmɪlɔɪd/adjective 2noun 2forms 3 adjective2 •Containing or resembling starch. •Applied to a mushroom that turns blue-black upon application of Melzer's reagent. noun2 •A waxy compound of protein and polysaccharides that is found deposited in tissues in amyloidosis. •Any of various starchlike substances. formsamyloids · more amyloid · most amyloid