domoic acid

noun

do·​mo·​ic acid də-ˈmō-ik- How to pronounce domoic acid (audio)
: a neurotoxin C15H21NO6 that is produced by some diatoms (especially genus Pseudo-nitzschia) and has caused poisoning in vertebrates (such as sea lions, birds, and humans) that have consumed diatom-contaminated fish or shellfish

Examples of domoic acid 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.
The 13 pelicans had been poisoned by domoic acid, a toxin that occurs in algal blooms, which fish can consume. Los Angeles Times, 10 July 2025 The cause is less demonic and more likely domoic acid toxicosis caused by toxic algal bloom, often referred to as red tide, experts say. Cnn.com Wire Service, Mercury News, 7 Apr. 2025 What to know about domoic acid poisoning The sea lion’s death came during an uptick in the number of sea lions suffering from domoic acid poisoning found along the Southern California coast, according to a Feb. 25 Facebook post from the Pacific Marine Mammal Center. Daniella Segura, Sacbee.com, 18 June 2025 On one Sunday earlier this year, 16 dead dolphins were collected from San Diego-area beaches, a majority of whom later tested positive for high levels of domoic acid. Caleb Lunetta, San Diego Union-Tribune, 14 May 2025 See All Example Sentences for domoic acid

Word History

Etymology

Japanese dōmoi, the alga Chondria armata

First Known Use

1982, in the meaning defined above

Time Traveler
The first known use of domoic acid was in 1982

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Cite this Entry

“Domoic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/domoic%20acid. Accessed 20 Jul. 2025.

Medical Definition

domoic acid

noun
do·​mo·​ic acid də-ˈmō-ik- How to pronounce domoic acid (audio)
: a neurotoxin analog C15H21NO6 of glutamic acid that is produced chiefly by marine diatoms (as Pseudo-nitzschia australis and Pseudo-nitzschia pungens) and has caused poisoning in sea mammals and birds and amnesic shellfish poisoning in humans who have consumed contaminated fish or shellfish

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