proteid adjective 2noun 2forms 1 adjective2 •Of or pertaining to proteins. •Containing protein. noun2 •A salamander of the family Proteidae, comprising the European olm (Proteus anguinus) and the mud puppy and waterdogs of North America (genus Necturus). •(no longer used) A protein.When strong nitric acid is added to an aqueous solution of any of the proteids, a white precipitate forms, which turns yellow on heating the liquid. — 1907 formsproteids
