biotoxin

noun

bio·​tox·​in ˈbī-ō-ˌtäk-sən How to pronounce biotoxin (audio)
: a toxic substance of biological origin

Examples of biotoxin 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.
Reopening an area closed for biotoxins requires two consecutive tests that show toxin levels are below a certain threshold, according to the agency. — CBS News, 10 June 2024 Large animal die-offs are often due to biotoxins, viruses or bacterial infections. — Susanne Rust, Los Angeles Times, 27 Mar. 2024

Word History

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of biotoxin was in 1898

Rhymes for biotoxin

See All Rhymes for biotoxin

Browse Nearby Words

biotoxin
See all Nearby Words

Cite this Entry

“Biotoxin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biotoxin. Accessed 25 Mar. 2025.

Copy Citation

Share

Medical Definition

biotoxin

noun
bio·​tox·​in ˈbī-ō-ˌtäk-sən How to pronounce biotoxin (audio)
: a toxic substance of biological origin

More from Merriam-Webster on biotoxin

Britannica.com: Encyclopedia article about biotoxin

Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

Words You Always Have to Look Up

Democracy or Republic: What's the difference?
See More

Popular in Wordplay

See More

Top 10 Sophisticated Insults

Flower Etymologies For Your Spring Garden

More Words with Remarkable Origins

Terroir, Oenophile, & Magnum: Ten Words About Wine

8 Words for Lesser-Known Musical Instruments
See More

Popular Features

See More

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Top 10 Sophisticated Insults

Flower Etymologies For Your Spring Garden
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
dog-in-disguise
Rhyme Disguise Quiz Pair up words that look different but sound alike.
See All