Aspirin definition

ăspər-ĭn, -prĭn
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A white, crystalline compound, C9 H8 O4 , derived from salicylic acid and commonly used in tablet form to relieve pain and reduce fever and inflammation. It is also used as an antiplatelet agent.
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A tablet of aspirin.
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A white, crystalline powder, acetylsalicylic acid, CH3COOC6H4COOH, used as an anti-inflammatory drug and for reducing fever, relieving headaches, etc.
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A tablet of this powder.
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A white, crystalline compound, C9 H8 O4 , derived from salicylic acid and commonly used in tablet form to relieve pain and reduce fever and inflammation. It is also used as an antiplatelet agent.
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A tablet of aspirin.
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A white crystalline compound derived from salicylic acid and used in medicine to relieve fever and pain and as an anticoagulant. Also called acetylsalicylic acid. Chemical formula: C9H8O4.
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An acronym for Australian Stock Price Riskless Indexed Notes. These are four-year, zero-coupon bonds that are guaranteed by the Treasury of New South Wales. The bonds are repayable at face value plus a percentage increase that the Australian All Ordinaries stock index rises above a predetermined level during the time period.
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(uncountable, pharmacology) An analgesic drug, acetylsalicylic acid.
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(countable) A tablet containing this substance.
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Other Word Forms

Noun

Singular:
aspirin
Plural:
aspirins

Origin of aspirin

  • Originally a trademark

    From American Heritage Dictionary of the English Language, 5th Edition

  • From the German trademark Aspirin, from Acetylirte Spirsäure (“acetylated spiræic acid”). The trade name Aspirin is a registered trademark in some countries, but has entered the English language in generic usage.

    From Wiktionary