- a white, crystalline powder, acetylsalicylic acid, CHCOOCHCOOH, used as an anti-inflammatory drug and for reducing fever, relieving headaches, etc.
- pl. -·rin or -·rins a tablet of this powder
Origin of aspirinGerman from Classical Greek a-, without + Modern Latin Spiraea, spirea + -in: so named (1899) by H. Dreser, German chemist, because compounded without use of spirea (in which the natural acid is found)
nounpl. aspirin, or as·pi·rins
- A white, crystalline compound, C9H8O4, 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. Also called acetylsalicylic acid .
- A tablet of aspirin.
Origin of aspirinOriginally a trademark
(countable and uncountable, plural aspirins)
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.
aspirin - Investment & Finance Definition
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.