benzimidazole

noun

: a crystalline base C7H6N2 that is composed of a benzene ring fused with an imidazole ring and is structurally similar to purine
also : any of various derivatives (such as thiabendazole, omeprazole, or benomyl) of this base typically possessing therapeutic properties including broad-spectrum anthelmintic, fungicidal, or antimicrobial action

Examples of benzimidazole in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Prescriptions of ivermectin and the compound benzimidazole among cancer patients increased more than 160% from 2024 to 2025, according to research published in JAMA, which looked at health data of more than 68 million people. Cara Lynn Shultz, PEOPLE, 18 June 2026 No clinical trials have supported the safety or effectiveness of ivermectin–benzimidazole for treating cancer, experts noted. Melissa Rudy, FOXNews.com, 13 May 2026 Synthesized in the 1950s for research, nitazene compounds are synthetic opioids that belong to a drug class called benzimidazole-opioids, according to the Ohio Bureau of Criminal Investigation Laboratory Division. Tori B. Powell, CBS News, 20 Apr. 2022

Word History

Etymology

International Scientific Vocabulary

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of benzimidazole was in 1898

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Cite this Entry

“Benzimidazole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/benzimidazole. Accessed 3 Jul. 2026.

Medical Definition

benzimidazole

noun
: a crystalline base C7H6N2 used especially to inhibit the growth of various viruses, parasitic worms, and fungi
also : one of its derivatives

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