botulinum toxin

noun

: a neurotoxin formed by botulinum that causes botulism and that is injected in a purified form for therapeutic and cosmetic purposes (as to treat blepharospasm and reduce wrinkles)

Examples of botulinum toxin 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.
Botox is a brand name for a medication that contains botulinum toxin type A, a substance that temporarily relaxes muscles. Sarah Jividen, Verywell Health, 27 May 2025 As Allure previously reported, this type of injectable (also known as botulinum toxin type A) works to smooth wrinkles by temporarily preventing the nerves in facial muscles to flex. Sarah Kinonen, Allure, 16 May 2025 Surgical treatments can be an option for patients who fail botulinum toxin treatment, though surgeries come with risks and can be variably effective. Indu Subramanian, The Conversation, 1 May 2025 The report includes risk factors such as potential delays in regulatory approvals, competition from existing botulinum toxin products, and reliance on third-party manufacturers. Quartz Intelligence Newsroom, Quartz, 24 Mar. 2025 See All Example Sentences for botulinum toxin

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of botulinum toxin was in 1923

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Cite this Entry

“Botulinum toxin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/botulinum%20toxin. Accessed 2 Jun. 2025.

Medical Definition

botulinum toxin

noun
variants also botulinus toxin
: a very powerful neurotoxin that causes botulism and is produced by the botulinum bacterium (Clostridium botulinum)
also : botulinum toxin type a

Note: Botulinum toxin acts primarily on the parasympathetic nervous system.

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