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thimerosal

American  
[thahy-mur-uh-sal, -mer-] / θaɪˈmɜr əˌsæl, -ˈmɛr- /

noun

Pharmacology.
  1. a cream-colored, crystalline, water-soluble powder, C 9 H 9 HgNaO 2 S, used chiefly as an antiseptic.


thimerosal British  
/ θaɪˈmɛrəˌsæl /

noun

  1. a creamy white crystalline compound of mercury, used in solution as an antiseptic. Formula: C 9 H 9 HgNaO 2 S

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of thimerosal

1945–50; perhaps thi- + mer(cury) + -o- + sal(icylate)

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In the piece, Kennedy asserted that “the Geiers have completed six studies that demonstrate a powerful correlation between thimerosal and neurological damage in children.”

From Los Angeles Times Apr. 1, 2025

Thimerosal has been removed from childhood vaccines since 2001, according to the CDC, and “research does not show any link between thimerosal and autism.”

From Los Angeles Times Dec. 8, 2024

He questioned the safety of thimerosal, a common vaccine preservative, advancing the debunked claim it could lead to autism.

From Science Magazine Nov. 26, 2024

He wanted to reassure parents who were worried about the effects of a mercury-based preservative called thimerosal, found in some vaccines.

From BBC Mar. 1, 2024

But a year or so later, Mr Kennedy wrote an article published in Rolling Stone magazine which repeated baseless claims that thimerosal was causing health problems.

From BBC Mar. 1, 2024

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