different between quinine vs quinidine

English

Etymology

The noun is either:

• derived from Spanish quina (“quinine”) (a clipping of quinaquina (“Cinchona bark”)) + English -ine (suffix forming names of chemical substances, especially (among others) alkaloidal substances);; or
• borrowed from French quinine, from quin(quina) (“Cinchona bark”) + -ine (feminine form of -in (suffix forming nouns)).

Spanish quinaquina and French quinquina are both derived from Quechua kina-kina, a reduplication of kina (“bark; (specifically) Cinchona bark”).

The verb is derived from the noun.

Pronunciation

• (Received Pronunciation) IPA^(key): /?kw?.ni?n/, /kw??ni?n/
• (General American) IPA^(key): /?kwa?.na?n/, /?kw?.na?n/, /kw??na?n/, /?kw?.nin/, /?k?.nin/
• Rhymes: -i?n, -a?n (some pronunciations)
• Hyphenation: qui?nine

Noun

quinine (countable and uncountable, plural quinines)

1. (pharmacology) An alkaloid with the chemical formula C??H??N?O? derived from cinchona bark (from plants of the genus Cinchona) used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it. [from early 19th c.]

Derived terms

Related terms

Translations

See also

• Jesuit's bark

Verb

quinine (third-person singular simple present quinines, present participle quinining, simple past and past participle quinined)

1. (transitive, archaic) To treat (someone) with quinine.

   Synonym: (obsolete) quininize

Derived terms

• quinined (adjective)

Translations

References

Further reading

• quinine on Wikipedia.Wikipedia

French

Pronunciation

• IPA^(key): /ki.nin/

Noun

quinine f (plural quinines)

1. quinine

References

• “quinine” in the Dictionnaire de l’Académie française, 8th Edition (1932–35).

Further reading

• “quinine” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

English

Etymology

From Spanish quina +? -idine.

Pronunciation

• IPA^(key): /?kw?n.?.di?n/

Noun

quinidine (countable and uncountable, plural quinidines)

1. (organic chemistry, pharmacology) A compound obtained from cinchona bark and used to treat irregularities of heart rhythm. It is an isomer of quinine.

Translations

References

• “quinidine”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
• “quinidine”, in Merriam–Webster Online Dictionary, (Please provide a date or year).