thiomersal

T1H4I1O1M3E1R1S1A1L1

noun

A compound, chemical formula C₉H₉HgNaO₂S, used as an antiseptic and antifungal agent, especially in vaccines.

Similar
merthiolatesodium ethylmercurithiosalicylate
Scrabble 15
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Meanings

nounthiomersal (uncountable)

alternative thimerosal

  1. uncountablemedicineA compound, chemical formula C₉H₉HgNaO₂S, used as an antiseptic and antifungal agent, especially in vaccines.

    Synonyms: merthiolate, sodium ethylmercurithiosalicylate

Synonyms & antonyms

nounA compound, chemical formula C₉H₉HgNaO₂S, used as an antiseptic and antifungal agent, especially in vaccines.

Similar
merthiolatesodium ethylmercurithiosalicylate
Also see
merthiolatesodium ethylmercurithiosalicylate

Origin

From thio- + -mer- (“mercury-containing drug”) + -sal (“salicylic acid derivative”).

Full word history & related roots →

Translations

Spanish thiomersal
  • thiomersalcompound

Rhymes & wordplay

Anagrams

isothermalthimerasol
Cite this entry
APA

thiomersal. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/thiomersal

MLA

“thiomersal.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/thiomersal. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “thiomersal,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/thiomersal.

Source: thiomersal on Wiktionary, CC BY-SA 4.0.