Definition of dextromethorphan
: a cough suppressant C18H25NO that is widely used especially in the form of a hydrated hydrogen bromide complex
Recent Examples of dextromethorphan from the Web
The heart drug helps boost and maintain levels of the dextromethorphan in the bloodstream.
In the early 2000s, Smith combined dextromethorphan — the main ingredient in cough syrups such as Robitussin — with quinidine, a drug used to treat irregular heart rhythms.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dextromethorphan'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of dextromethorphan
dextr- + methyl + morphinan parent substance of morphine alkaloids, from morphine + 3-an
First Known Use: 1967See Words from the same year
Medical Definition of dextromethorphan
: a cough suppressant that is widely used especially in the form of its hydrobromide C18H25NO·HBr in over-the-counter cough and cold preparations and is a codeine analog of levorphanol lacking the analgesic properties of codeine and producing little or no depression of the central nervous system—abbreviation DXM
Learn More about dextromethorphan
Britannica.com: Encyclopedia article about dextromethorphan
Seen and Heard
What made you want to look up dextromethorphan? Please tell us where you read or heard it (including the quote, if possible).