WordReference Random House Learner's Dictionary of American English © 2017
o•pi•ate /ˈoʊpiɪt, -ˌeɪt/USA pronunciation   n. [countable]
  1. Drugsa drug containing opium.
  2. Drugsa drug that calms one or makes one sleepy.
  3. anything that brings on a feeling of laziness or soothes the feelings.

WordReference Random House Unabridged Dictionary of American English © 2017
o•pi•ate  (n., adj. ōpē it, -āt′;v. ōpē āt′),USA pronunciation n., adj., v.,  -at•ed, -at•ing. 
  1. Drugsa drug containing opium or its derivatives, used in medicine for inducing sleep and relieving pain.
  2. Drugsany sedative, soporific, or narcotic.
  3. anything that causes dullness or inaction or that soothes the feelings.

  1. mixed or prepared with opium.
  2. inducing sleep;
  3. causing dullness or inaction.

  1. to subject to an opiate;
  2. to dull or deaden.
  • Medieval Latin opiātus bringing sleep, equivalent. to Latin opi(um) opium + -ātus -ate1
  • 1535–45
    • 2.See corresponding entry in Unabridged drug.
    • 3.See corresponding entry in Unabridged anodyne.
    • 5.See corresponding entry in Unabridged sedative.
    • 2.See corresponding entry in Unabridged stimulant.

Collins Concise English Dictionary © HarperCollins Publishers::

opiate n /ˈəʊpɪɪt/
  1. any of various narcotic drugs, such as morphine and heroin, that act on opioid receptors
  2. any other narcotic or sedative drug
  3. something that soothes, deadens, or induces sleep
adj /ˈəʊpɪɪt/
  1. containing or consisting of opium
  2. inducing relaxation; soporific
vb /ˈəʊpɪˌeɪt/(transitive) rare
  1. to treat with an opiate
  2. to dull or deaden
Etymology: 16th Century: from Medieval Latin opiātus; from Latin opium poppy juice, opium

'opiate' also found in these entries:

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