[ noun, adjective oh-pee-it, -eyt; verb oh-pee-eyt ]
/ noun, adjective ˈoʊ pi ɪt, -ˌeɪt; verb ˈoʊ piˌeɪt /



verb (used with object), o·pi·at·ed, o·pi·at·ing.

to subject to an opiate; stupefy.
to dull or deaden.

Origin of opiate

1535–45; < Medieval Latin opiātus bringing sleep, equivalent to Latin opi(um) opium + -ātus -ate1

Related forms

un·o·pi·at·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for opiate

British Dictionary definitions for opiate


noun (ˈəʊpɪɪt)

adjective (ˈəʊpɪɪt)

containing or consisting of opium
inducing relaxation; soporific

verb (ˈəʊpɪˌeɪt) (tr) rare

to treat with an opiate
to dull or deaden

Word Origin for opiate

C16: from Medieval Latin opiātus; from Latin opium poppy juice, opium
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

Medicine definitions for opiate


[ ōpē-ĭt, -āt′ ]


Any of various sedative narcotics that contain opium or one or more of its natural or synthetic derivatives.
A drug, hormone, or other chemical substance that has sedative or narcotic effects similar to those containing opium or its derivatives.opioid


Of or containing opium or any of its derivatives.
Resembling opium or its derivatives in activity.
Inducing sleep or sedation; soporific.


To subject to the action of an opiate.

Related forms

opi•ate (-ĭt, -āt′) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.