neurotoxin

noun

neu·​ro·​tox·​in ˌnu̇r-ō-ˈtäk-sən How to pronounce neurotoxin (audio)
ˌnyu̇r-
: a poisonous substance (such as tetrodotoxin or saxitoxin) that acts on the nervous system and disrupts the normal function of nerve cells

Did you know?

The nervous system is almost all-powerful in the body: all five senses depend on it, as do breathing, digestion, and the heart. So it's an obvious target for poisons, and neurotoxins have developed as weapons in many animals, including snakes, bees, and spiders. Some wasps use a neurotoxin to paralyze their prey so that it can be stored alive to be eaten later. Snake venom is often neurotoxic (as in cobras and coral snakes, for example), though it may instead be hemotoxic (as in rattlesnakes and coppermouths), operating on the circulatory system. Artificial neurotoxins, called nerve agents, have been developed by scientists as means of chemical warfare; luckily, few have ever been used.

Examples of neurotoxin in a Sentence

Recent Examples on the Web Lead is a neurotoxin known to cause irreversible long-term organ damage, lower IQs, higher risk for miscarriage, asthma, cardiovascular disease, impotence, and elevated blood pressure. Kff Health News, The Mercury News, 18 July 2024 The southern hydrilla strain, about which much more is known after years of study, harbors an algae-like cyanobacteria that produces a neurotoxin that gets into the food chain and kills birds. Edmund H. Mahony, Hartford Courant, 8 July 2024 Lead, a neurotoxin, leached from the city's aging pipes and into the water that flowed from the faucets, causing irreparable damage, especially in children, whose brains and bones were still developing. Kristen Jordan Shamus, Detroit Free Press, 25 Apr. 2024 The second most recent neurotoxin injectable on the market, Jeuveau, or PrabotulinumtoxinA, was approved to treat moderate to severe lines between the eyebrows. Danielle Cohen, Allure, 23 July 2024 See all Example Sentences for neurotoxin 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'neurotoxin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

borrowed from French névrotoxine, from névro- neuro- + toxine toxin

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of neurotoxin was in 1902

Dictionary Entries Near neurotoxin

Cite this Entry

“Neurotoxin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neurotoxin. Accessed 18 Aug. 2024.

Medical Definition

neurotoxin

noun
neu·​ro·​tox·​in -ˈtäk-sən How to pronounce neurotoxin (audio)
: a poisonous substance (such as tetrodotoxin or saxitoxin) that acts on the nervous system and disrupts the normal function of nerve cells

More from Merriam-Webster on neurotoxin

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!