释义 |
preg·nen·o·lone \pregˈnēnəlˌōn\ noun (-s) Etymology: International Scientific Vocabulary pregnene + -ol + -one : a crystalline unsaturated hydroxy steroid ketone C21H32O2 formed by the oxidation of cholesterol (as in living cells), stigmasterol, diosgenin, or other steroids and yielding progesterone on dehydrogenation; 3-hydroxy-5-pregnen-20-one |