aspirin

noun

as·​pi·​rin ˈa-sp(ə-)rən 

plural aspirin or aspirins

1

: a white crystalline derivative C₉H₈O₄ of salicylic acid used for relief of pain and fever

2

: a tablet of aspirin

Examples of aspirin in a Sentence

Aspirin is effective in controlling headaches.

Recent Examples on the Web

Take Non-Steroidal Anti-Inflammatory Drugs Consider taking a nonsteroidal anti-inflammatory drug (NSAID), such as Advil (ibuprofen), Aleve (naproxen), or aspirin. —Sherri Gordon, Health, 19 Aug. 2025

Science, money, need; all are pointing to the idea that psychedelics, in some settings, soon could be as controversial as aspirin. —Andre Mouchard, Oc Register, 18 Aug. 2025

Good luck getting through an Optum report without needing aspirin halfway. —Jim Osman, Forbes.com, 3 Aug. 2025

Regarding the bruising being attributed to aspirin therapy, Sundick noted that many older adults take daily low-dose aspirin as part of a cardiovascular disease prevention strategy. —Melissa Rudy, FOXNews.com, 18 July 2025

Word History

Etymology

International Scientific Vocabulary, from acetyl + spiraeic acid (former name of salicylic acid), from New Latin Spiraea, genus of shrubs — more at spirea

First Known Use

1899, in the meaning defined at sense 1

Kids Definition

aspirin

noun

as·​pi·​rin ˈas-p(ə-)rən 

1

: a white drug used as a remedy for pain and fever

2

: a tablet of aspirin

Medical Definition

aspirin

noun

as·​pi·​rin ˈas-p(ə-)rən 

plural aspirin or aspirins

1

: a white crystalline derivative C₉H₈O₄ of salicylic acid used for relief of pain and fever

2

: a tablet of aspirin