Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A substance that has effects similar to opium:
Any of the natural substances, such as an endorphin, released in the body in response to pain; an endogenous opioid.
Definition source: English Wiktionary via Wiktextract
Topics: medicine, physiology, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A substance that has effects similar to opium:
Any of a group of synthetic compounds that exhibit similarities to the opium alkaloids that occur in nature.
Definition source: English Wiktionary via Wiktextract
Topics: medicine, pharmacology, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Attested 1963; from opium + -oid, to distinguish from opiate.
Across languages
8 source translations are retained for this English entry.
