biological weapon

noun

: a harmful biological agent (such as a pathogenic microorganism or a neurotoxin) used as a weapon to cause death or disease usually on a large scale

Examples of biological weapon 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 film tells the story of a biological weapon being unleashed inside a Seoul skyscraper that turns the people trapped inside the building into a deadly zombie hive mind. — Abid Rahman, HollywoodReporter, 1 Sep. 2026 When an American mole in the company goes missing, along with the keys to the model’s encryption, the biological weapon is at risk. — Carly Tagen-Dye, PEOPLE, 31 July 2026 It is set during the events of the game Resident Evil 2, when a biological weapon is transforming the citizens of Raccoon City into zombies. — Jason P. Frank, Vulture, 23 July 2026 Lyme disease began as a biological weapon, one theory suggested. — Burkhard Bilger, New Yorker, 29 June 2026 See All Example Sentences for biological weapon

Word History

First Known Use

1918, in the meaning defined above

Time Traveler

The first known use of biological weapon was in 1918

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Browse Nearby Words

biological warfare

biological weapon

biological zone

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Cite this Entry

Style

“Biological weapon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biological%20weapon. Accessed 3 Sep. 2026.

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Kids Definition

biological weapon

noun

: a harmful living thing (as a disease-causing bacterium) or something (as a poisonous substance) produced by a living thing that is used as a weapon to cause death or disease

Medical Definition

biological weapon

noun

biological weap·on -ˈwep-ən

: a harmful biological agent (as a pathogenic microorganism or a neurotoxin) used as a weapon to cause death or disease usually on a large scale

biological weapon

noun

Examples of biological weapon in a Sentence

Word History

Browse Nearby Words

Cite this Entry

Kids Definition

Medical Definition

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