acetaminophen

American  

[uh-see-tuh-min-uh-fuhn] / əˌsi təˈmɪn ə fən /

noun

Pharmacology.

1. a crystalline substance, C 8 H 9 NO 2 , used as a headache and pain reliever and to reduce fever.

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acetaminophen Scientific  

/ ə-sē′tə-mĭn′ə-fən,ăs′ə- /

1. A crystalline compound used in medicine to relieve pain and reduce fever. Chemical formula: C ₈ H ₉ NO ₂.

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Etymology

Origin of acetaminophen

First recorded in 1955–60; acet- + amino- + phen(ol)

Example Sentences

See Examples For:

acetaminophen

"And we are certainly not deciding the approach that policymakers concerned with protecting public health should take to regulating the use of acetaminophen."

From Barron's ● Jul. 13, 2026

Plaintiff lawyer Ashley Keller said, “The Court of Appeals agreed that our experts’ analyses of the voluminous research linking prenatal acetaminophen exposure to neurodevelopmental disorders is reliable.

From The Wall Street Journal ● Jul. 13, 2026

The American College of Obstetricians and Gynecologists says acetaminophen is safe to use during pregnancy.

From The Wall Street Journal ● Jan. 26, 2026

Could his trouble pronouncing acetaminophen be a phonemic paraphasic error?

From Slate ● Jan. 26, 2026

They compared pregnancies in which acetaminophen was used with those in which it was not, paying particular attention to studies that examined siblings born to the same mother.

From Science Daily ● Jan. 19, 2026