naltrexone

English

Chemical structure of naltrexone

Etymology

Probably from naloxone +‎ Latin tres (“three”).

Pronunciation

• (Received Pronunciation) IPA^(key): /nælˈtɹɛk.səʊn/
• (General American) IPA^(key): /nælˈtɹɛkˌsoʊn/

Noun

naltrexone (uncountable)

1. (pharmacology) A synthetic drug, similar to morphine, which blocks opiate receptors in the nervous system and is used chiefly in the treatment of heroin addiction.

References

• “naltrexone”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “naltrexone”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.