† melanurinn.

Forms: 1800s melanourine, 1800s melanurin.

Origin: A borrowing from French. Etymon: French mélanourine.

Etymology: < French mélanourine (H. Braconnot 1825, in Ann. de chim. et de physique 29 259) < mélano- melano- comb. form + urine urine n.¹, after cyanourine cyanurin n. With the form melanurin compare German Melanurin (1840 or earlier). N.E.D. (1906) gives the pronunciation as (melăniū^ə·rin) /mɛləˈnjʊərɪn/.

Chemistry. Obsolete.

A constituent of urine which darkens on oxidation, perhaps potassium indoxylsulphate (‘indican of urine’). Cf. melanic acid n. at melanic adj. 1.

ΘΚΠ

the world > matter > chemistry > organic chemistry > substances from animals or humans > [noun] > substances in urine > miscellaneous others

melanurin1844

kyestein1846

indican1859

heteroxanthine1886

homogentisic acid1891

urobilinogen1893

uroporphyrin1924

uroporphyrinogen1924

pyridoxic acid1944

1844 G. Bird Urinary Deposits 219 Melanourine and melanic acid.

1845 G. E. Day tr. J. F. Simon Animal Chem. I. 45 The blue and black pigments that..have received the names of cyanurin and melanurin.

1880 tr. H. W. von Ziemssen et al. Cycl. Pract. Med. IX. 387 A pigment which becomes black by oxidation on exposure of the urine to the air, and on addition of nitric acid (melanin, melanurin).

This entry has been updated (OED Third Edition, June 2001; most recently modified version published online December 2020).

单词	melanurin
释义	† melanurinn. Forms: 1800s melanourine, 1800s melanurin. Origin: A borrowing from French. Etymon: French mélanourine. Etymology: < French mélanourine (H. Braconnot 1825, in Ann. de chim. et de physique 29 259) < mélano- melano- comb. form + urine urine n.¹, after cyanourine cyanurin n. With the form melanurin compare German Melanurin (1840 or earlier). N.E.D. (1906) gives the pronunciation as (melăniū^ə·rin) /mɛləˈnjʊərɪn/. Chemistry. Obsolete. A constituent of urine which darkens on oxidation, perhaps potassium indoxylsulphate (‘indican of urine’). Cf. melanic acid n. at melanic adj. 1. ΘΚΠ the world > matter > chemistry > organic chemistry > substances from animals or humans > [noun] > substances in urine > miscellaneous others melanurin1844 kyestein1846 indican1859 heteroxanthine1886 homogentisic acid1891 urobilinogen1893 uroporphyrin1924 uroporphyrinogen1924 pyridoxic acid1944 1844 G. Bird Urinary Deposits 219 Melanourine and melanic acid. 1845 G. E. Day tr. J. F. Simon Animal Chem. I. 45 The blue and black pigments that..have received the names of cyanurin and melanurin. 1880 tr. H. W. von Ziemssen et al. Cycl. Pract. Med. IX. 387 A pigment which becomes black by oxidation on exposure of the urine to the air, and on addition of nitric acid (melanin, melanurin). This entry has been updated (OED Third Edition, June 2001; most recently modified version published online December 2020). < n.1844
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