Prō'te-ine, n.

n. [N. Lat. protéinum, from Gr. πρῶτος, first, πρωτεύειν, to be the first, πρωτεῖον, the first place, chief rank, because it occupies the first place in relation to the albuminous principles.] (Chem.) A substance claimed by Mulder to be obtained as a distinct substance from albumen, fibrine, or caseine, and considered by him to be the basis of animal tissue and of some substances of vegetable origin

The theory of protéine can not be maintained. Gregory.

The theory of Mulder is doubted and denied by many chemists, and also the existence of protéine as a distinct substance.