norsteroidn.
/nɔːˈstɛrɔɪd/, /nɔːˈstɪərɔɪd/, U.S. /ˌnɔrˈstɛˌrɔɪd/, /ˌnɔrˈstɪˌrɔɪd/ Biochemistry.
A steroid that lacks a methyl side chain (esp. the one containing the carbon atom numbered 19), or in which one of its rings has lost a methylene group.
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norsteroid1950
1950 Jrnl. Chem. Soc. 367 The synthetic approach to nor-steroid hormones has now been greatly simplified by Birch and Mukherji's method of reduction.
1954 Jrnl. Chem. Soc. 1984 Values for 2-substituted a-norsteroids..may be considered.
1970 Indian Jrnl. Biochem. 7 116/1 Since the introduction of 19-norsteroids as the synthetic progestational agents, it has become necessary to know their role as regulators of metabolic processes.
1990 Lancet 26 May 1238/1 The synthetic 19-norsteroid mifepristone is a potent antiprogesterone.
2001 European Jrnl. Appl. Physiol. 84 426 The purpose of this study was to determine the effects of 8 weeks of norsteroid supplementation on body composition and athletic performance.
This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).
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n.1950