pregnenolone
noun
preg·nen·o·lone preg-ˈne-nə-ˌlōn 
: an unsaturated hydroxy steroid ketone C21H32O2 that is formed by the oxidation of steroids (such as cholesterol) and yields progesterone on dehydrogenation
Example Sentences
Recent Examples on the Web First, there’s a rise in pregnenolone and progesterone. 
Joshua Hawkins, BGR, 19 May 2022 The authors were able to correct their rats’ behavioural and neurological abnormalities by dosing them with pregnenolone, a drug currently undergoing tests for the treatment of cannabis addiction, schizophrenia, autism and bipolar disorder. The Economist, 19 Oct. 2019
Joshua Hawkins, BGR, 19 May 2022 The authors were able to correct their rats’ behavioural and neurological abnormalities by dosing them with pregnenolone, a drug currently undergoing tests for the treatment of cannabis addiction, schizophrenia, autism and bipolar disorder. The Economist, 19 Oct. 2019 Word History
Etymology
International Scientific Vocabulary pregnene (C21H34) + -ol entry 1 + -one
First Known Use
1936, in the meaning defined above
Medical Definition
pregnenolone
noun
preg·nen·o·lone preg-ˈnen-ᵊl-ˌōn
: an unsaturated hydroxy steroid ketone C21H32O2 that is formed by the oxidation of steroids (as cholesterol) and yields progesterone on dehydrogenation
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