Dictionary.com
Thesaurus.com

bioweapon

American  
[bahy-oh-wep-uhn] / ˈbaɪ oʊˌwɛp ən /

noun

  • bioweapons
    plural
  1. a weapon that uses a pathogen, toxin, or other biological material; a weapon used in biological warfare.


bioweapon British  
/ ˈbaɪəʊˌwɛpən /

noun

  1. a living organism or a toxic product manufactured from it, used to kill or incapacitate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Cole, on his podcast and social media, has discussed the theory that ticks carrying Lyme disease were used by the U.S. in bioweapon research during the Cold War.

From The Wall Street Journal Jan. 11, 2026

Every “Alien” movie is a cautionary story about scientific hubris, with humans racing to harness the xenomorph’s potential as a bioweapon.

From Salon Jul. 4, 2025

The social network’s owner on Monday hosted Kennedy, a vaccine skeptic seeking the Democratic presidential nomination, who pushed baseless claims such as the coronavirus being a bioweapon.

From New York Times Jun. 6, 2023

“I do not believe the CCP intentionally unleashed COVID-19 on the world as a bioweapon, though I could be wrong,” he said.

From Washington Times Feb. 21, 2023

An expert group last week recommended broadening rules that require universities and funding agencies to determine whether proposed studies count as dual-use research—work that carries the risk of intentionally or accidentally creating a bioweapon.

From Science Magazine Jan. 30, 2023

Concern stems from recent reports that Anthropic blocked use of AI tools to develop bioweapons and that swarms of AI bots autonomously undertook massive hacking operations.

From Salon Sep. 14, 2026

Anthropic says it blocked possible attempts to use artificial intelligence to develop bioweapons.

From MarketWatch Sep. 11, 2026

Yet Anthropic has touted safety since its founding and its chief executive, Dario Amodei, has long expressed concern about risks its tools could create, from AI-enabled cyberattacks and bioweapons to machines that escape human control.

From The Wall Street Journal Jun. 11, 2026

Analysts said before the summit that fears over autonomous AI weapons, cybersecurity and the threat of new AI-designed bioweapons were mutual concerns for Xi and Trump.

From Barron's May 19, 2026

In his resignation letter shared on X, Mrinank Sharma told the firm he was leaving amid concerns about AI, bioweapons and the state of the wider world.

From BBC Feb. 12, 2026

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training