protein

borrowed from French protéine, from Late Greek prōteîos "of the first quality" (from Greek prôtos "first, foremost" + -eios, adjective suffix, originally from s-stems) + -ine -ine entry 1 — more at proto-

Note: The term protein was introduced by the Dutch chemist Johannes Gerardus Mulder (1802-80), as French protéine in the article "Sur la composition de quelques substances animales" (Bulletin des sciences physiques et naturelles en Néerlande, vol. 1 [1838], pp. 104-19), and as Dutch protein in the article "Over Proteine en hare Verbindingen en Ontleidingsproducten" (Natuur- en scheikundig Archief, vol. 6 [1838], pp. 87-162). Though Mulder in the beginning of the papers expresses gratitude to Jöns Jakob berzelius for his support, he does not mention any connection between Berzelius and the novel word. In the twentieth century, however, it was discovered that Berzelius had suggested the word to Mulder in a letter written July 10, 1838: "Le nom protéine que je vous propose pour l'oxyde organique de la fibrine et de l'albumine, je voulais le dériver de πρωτειος, parce qu'il paraît être la substance primitive ou principale de la nutrition animale que les plantes préparent pour les herbivores et que ceux-ci fournissent ensuite aux carnassiers." ("The name protein, which I propose for the organic oxide of fibrin and albumin, I wish to derive from prōteios, because it appears to be the primitive or principal substance of animal nutrition, which plants prepare for herbivores, and which the latter then provide for carnivores." — quoted in H.B. Vickery, "The origin of the word protein," Yale Journal of Biology and Medicine, vol. 22, no. 5 [May, 1950], pp. 387-93.) In the French article, Mulder glosses the word prōteîos with Latin primarius "primary": "The organic material, being a general principal of all the constituent parts of the animal body and being found, as we will see later, in the vegetable kingdom, could be named protein from prōteîos …" ("La matière organique, étant un principe général de toutes les parties constituantes du corps animal, et se trouvant, comme nous verrons tantôt, dans le règne végétal, pourrait se nommer Protéine de πρωτεῖος primarius.") This appears to be Mulder's own interpretation of the Greek word, as the leading Greek dictionary of the time, Franz Passow's Handwörterbuch der griechischen Sprache (4. Ausgabe, 1831) defines it only as a masculine noun: "first rank, first place, primacy, priority" ("erster Rang, erster Platz, Vorrang, Vorzug"). For details, see the article by H.B. Vickery cited above and Harold Hartley, "Origin of the Word 'Protein'," Nature, vol. 168, issue 4267 (August 11, 1951), p. 244.