One of the mysteries of the English language finally explained.
A proteinaceous substance, a protein. Also: a protein combined with a sugar, phosphate, metal, or other atom or group.
A salamander of the family Proteidae, which comprises the olm of Europe (Proteus anguinus) and the mud puppy and waterdogs of North America (genus Necturus).
Belonging to or characteristic of the family Proteidae.
Late 19th century; earliest use found in Nature: a weekly journal of science. From protei- + -id, perhaps after German Proteide (frequently attributed to Felix Hoppe-Seyler, German chemist and physiologist, who used the term in 1870 in his Handbuch der physiologisch- und pathologisch-chemischen Analyse (ed. 3) iii. 215)<br>late 19th century; earliest use found in American Naturalist. From scientific Latin Proteus, genus name + -id, after scientific Latin Proteidae, family name.
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