quinine

noun qui·nine \ ˈkwī-ˌnīn also ˈkwi- or kwi-ˈnīn or ki-ˈnēn or kwi-ˈnēn \
Updated on: 12 Apr 2018

Definition of quinine

1 : a bitter crystalline alkaloid C20H24N2O2 from cinchona bark used in medicine
2 : a salt of quinine used especially as an antipyretic, antimalarial, and bitter tonic

Recent Examples of quinine from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quinine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of quinine

Spanish quina cinchona, from Quechua kina bark


QUININE Defined for English Language Learners

quinine

Definition of quinine for English Language Learners

  • : a drug that is made from the bark of a tree and used especially to treat malaria


QUININE Defined for Kids

quinine

noun qui·nine \ ˈkwī-ˌnīn \

Definition of quinine for Students

: a bitter drug obtained from cinchona bark and used to treat malaria

Medical Dictionary

quinine

noun qui·nine \ ˈkwī-ˌnīn also ˈkwin-ˌīn, esp British kwin-ˈēn, ˈkwin-ēn \

medical Definition of quinine

: a bitter crystalline alkaloid C20H24N2O2 obtained from cinchona bark that is used as a flavoring agent, has antipyretic and analgesic properties, and is administered orally in the form of its salts (as the hydrated sulfate (C20H24N2O2)2·H2SO4·2H2O) as an antimalarial


Seen and Heard

What made you want to look up quinine? 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 treat with excessive attention

Get Word of the Day daily email!

Test Your Vocabulary

April 2018 Words of the Day Quiz

  • rain-on-rainbow-umbrella
  • Which is the best synonym of traduce?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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!