eth·​chlor·​vy·​nol eth-ˈklȯr-və-ˌnȯl How to pronounce ethchlorvynol (audio) -ˌnōl How to pronounce ethchlorvynol (audio)
: a sedative and hypnotic drug C7H9ClO used especially in the short-term treatment of insomnia see placidyl

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“Ethchlorvynol.” Medical Dictionary, Merriam-Webster, Accessed 1 Dec. 2023.

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