dextromethorphan

noun dex·tro·me·thor·phan \ ˌdek-strō-mi-ˈthȯr-ˌfan \

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

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


Medical Dictionary

dextromethorphan

noun dex·tro·me·thor·phan \ ˌdek-strō-mi-ˈthȯr-ˌfan \

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


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).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to buzz or drone

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!