a. and sb. [f. L. albūmin- (see ALBUMEN) + -OID.] Not in Craig, 1847.
A. adj. Like or resembling albumen; of the same character as albumen.
1859. Lewes, Phys. Com. Life, I. ii. 128. These four albuminoid substances, namely albumen, fibrine, caseine, and gluten.
1869. Huxley, in Fortn. Rev., Feb., 135. All living matter is more or less albuminoid.
B. sb. in pl. = Albuminoid Principles: A class of organic compounds (also called Proteids), which form the chief part of the organs and tissues of animals and plants; they are composed of carbon, oxygen, nitrogen, hydrogen, and a little sulphur, and are divided into Albumins, Globulins, Fibrins, Derived Albumins, Coagulated Proteids, Peptones, and Amyloids.
1873. Balf. Stewart, Conserv. Force, vii. 177. The plastic matters of which vegetable structure is built are of two kinds, amyloids and albuminoids.
1876. M. Foster, Phys. (1879), 647. Proteids … are frequently spoken of as albuminoids.
