seco-comb. form

Stress is determined by a range of factors though some degree of stress is usually maintained on this combining form, e.g. seco-steroid Brit.

/ˌsɛkə(ʊ)ˈstɛrɔɪd/,

/ˌsɛkə(ʊ)ˈstɪərɔɪd/, U.S.

/ˌsɛkoʊˈstɛˌrɔɪd/,

/ˌsɛkoʊˈstɪˌrɔɪd/.

Etymology: < Latin secāre to cut + -o suffix.

Chemistry.

A formative element used in naming derivatives, esp. of steroids, in which fission of a ring has occurred (see quot. 1951). Hence also as quasi-adj.

ΚΠ

1951 R. S. Cahn et al. in Jrnl. Chem. Soc. 3535 Ring fission, with addition of a hydrogen atom at each terminal group thus created, shall be indicated by the prefix seco, the original steroid numbering being retained.

1959 L. F. Fieser & M. Fieser Steroids iv. 156 This was identified as the 2,3-secodicarboxylic acid..by saponification, oxidation to the 7-ketone, and Wolff-Kishner reduction to the known 2,3-secocholestane-2,3-dicarboxylic acid.

1961 I. E. Bush Chromatogr. Steroids ii. 102 The opening of rings to form seco-dicarboxylic acids.

1961 I. E. Bush Chromatogr. Steroids vi. 342 The C₁₉ triols..are oxidized to the d- seco-16,17-dialdehydes.

1977 Lancet 16 Apr. 841/1 The physiological regulation of secretion of this seco-steroid by the kidney.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

单词	seco-
释义	seco-comb. form Stress is determined by a range of factors though some degree of stress is usually maintained on this combining form, e.g. seco-steroid Brit. /ˌsɛkə(ʊ)ˈstɛrɔɪd/, /ˌsɛkə(ʊ)ˈstɪərɔɪd/, U.S. /ˌsɛkoʊˈstɛˌrɔɪd/, /ˌsɛkoʊˈstɪˌrɔɪd/. Etymology: < Latin secāre to cut + -o suffix. Chemistry. A formative element used in naming derivatives, esp. of steroids, in which fission of a ring has occurred (see quot. 1951). Hence also as quasi-adj. ΚΠ 1951 R. S. Cahn et al. in Jrnl. Chem. Soc. 3535 Ring fission, with addition of a hydrogen atom at each terminal group thus created, shall be indicated by the prefix seco, the original steroid numbering being retained. 1959 L. F. Fieser & M. Fieser Steroids iv. 156 This was identified as the 2,3-secodicarboxylic acid..by saponification, oxidation to the 7-ketone, and Wolff-Kishner reduction to the known 2,3-secocholestane-2,3-dicarboxylic acid. 1961 I. E. Bush Chromatogr. Steroids ii. 102 The opening of rings to form seco-dicarboxylic acids. 1961 I. E. Bush Chromatogr. Steroids vi. 342 The C₁₉ triols..are oxidized to the d- seco-16,17-dialdehydes. 1977 Lancet 16 Apr. 841/1 The physiological regulation of secretion of this seco-steroid by the kidney. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). < comb. form1951
随便看	sterilisers sterilises sterilising sterilities sterility sterilizability sterilizable sterilization sterilizations sterilizator sterilize sterilized sterilizer sterilizers sterilizes sterilizing sterisol sterks sterky sterl sterlet sterlets still as stone still away still forth