kyesteinn.

/kɪˈɛstiːɪn/

Forms: Also kystein, kiestein(e, kiestin(e, kyesteine.

Etymology: < French kiestéine, the term invented by Nauche ( Journ. de Chimie Médicale, 2nd Ser. V. 64, 1839), loosely < Greek κύησις conception, apparently after protéine and the like. When spelt as in French, often pronounced /ˈkiːstɪn/, /ˈkiːstaɪn/; but more usually written ky- after Greek κυ-. With more accurate knowledge of the nature of the thing, the name is now little used.

Chemistry.

A whitish substance occasionally found as a cloud in or pellicle upon urine; erroneously supposed by Nauche to be diagnostic of pregnancy.

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

1846 G. E. Day tr. J. F. Simon Animal Chem. II. 329 Nauche regards kystein as an indubitable sign of pregnancy.

1847–9 Todd's Cycl. Anat. & Physiol. IV. i. 461/1 During pregnancy, a substance, kiestein..is eliminated by the urine.

1888 New Sydenham Soc. Lexicon Kyesteïn..is now known to be chiefly composed of ammoniaco-magnesian phosphates, with fat-particles, vibrios, and bacteria, and to be found in putrefying urine other than that of a pregnant woman. It is probably produced by the decomposition of the urea in contact with mucus.

This entry has not yet been fully updated (first published 1901; most recently modified version published online June 2022).

单词	kyestein
释义	kyesteinn. /kɪˈɛstiːɪn/ Forms: Also kystein, kiestein(e, kiestin(e, kyesteine. Etymology: < French kiestéine, the term invented by Nauche ( Journ. de Chimie Médicale, 2nd Ser. V. 64, 1839), loosely < Greek κύησις conception, apparently after protéine and the like. When spelt as in French, often pronounced /ˈkiːstɪn/, /ˈkiːstaɪn/; but more usually written ky- after Greek κυ-. With more accurate knowledge of the nature of the thing, the name is now little used. Chemistry. A whitish substance occasionally found as a cloud in or pellicle upon urine; erroneously supposed by Nauche to be diagnostic of pregnancy. 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 1846 G. E. Day tr. J. F. Simon Animal Chem. II. 329 Nauche regards kystein as an indubitable sign of pregnancy. 1847–9 Todd's Cycl. Anat. & Physiol. IV. i. 461/1 During pregnancy, a substance, kiestein..is eliminated by the urine. 1888 New Sydenham Soc. Lexicon Kyesteïn..is now known to be chiefly composed of ammoniaco-magnesian phosphates, with fat-particles, vibrios, and bacteria, and to be found in putrefying urine other than that of a pregnant woman. It is probably produced by the decomposition of the urea in contact with mucus. This entry has not yet been fully updated (first published 1901; most recently modified version published online June 2022). < n.1846
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