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methaqualone

American  
[muh-thak-wuh-lohn, meth-uh-kwey-lohn, -kwol-ohn] / məˈθæk wəˌloʊn, ˌmɛθ əˈkweɪ loʊn, -ˈkwɒl oʊn /

noun

Pharmacology.

  1. a nonbarbiturate sedative-hypnotic substance, C 1 6 H 1 4 N 2 O, used to induce sleep: also widely used as an illicit drug.

methaqualone British  
/ ˌmɛθəˈkweɪləʊn /

noun

  1. a nonbarbituate sedative drug used to treat stress and insomnia. Formula: C 16 H 14 N 2 O

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of methaqualone

1960–65; meth(yl) + -a- of uncertain derivation + qu(in)a(zo)l(in)one ( quinazoline, -one )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.