biological weapon


Definition of biological weapon 

: 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

The Pentagon report also documents North Korea's cyber weapons efforts as well as its chemical and biological weapons program, which the US believes remains intact. Barbara Starr, CNN, "Pentagon's damning assessment of Kim regime made public, with summit in balance," 23 May 2018 The Space Force could do little to stop an asymmetric attack with a biological weapon. Joe Pappalardo, Popular Mechanics, "5 Space Forces From Sci-Fi and What We Can Learn From Them," 6 July 2018 Some fear that it could also be used to make a biological weapon. Fortune, "These DNA Cops Make Sure Deadly Viruses Don't Get Rebuilt," 27 June 2018 Of course, the denuclearization and nuclear weapons and biological weapons is one problem in North Korea. Jennifer Williams, Vox, "Read the full transcript of Trump’s North Korea summit press conference," 12 June 2018 Mattis did not specifically address chemical and biological weapons in his public remarks but said the United States would maintain its approach of backing up the diplomatic effort with military strength. Missy Ryan, Washington Post, "Mattis seeks to allay Japanese concerns in North Korea denuclearization effort," 29 June 2018 It has been confirmed that the system will protect against a wide range of threats – even including nuclear, chemical and biological weapons. Allison Barrie, Fox News, "Formidable 'Jaguar' recon vehicle revealed, touts powerful cannon and anti-tank missiles," 18 June 2018 Seven miles away is Porton Down, a laboratory that carries out classified experiments with chemical and biological weapons. Ellen Barry, New York Times, "At Site of U.K. Poisoning, Doubts About Case Creep In," 16 June 2018 Much about the arsenal is uncertain; and even less is known about the North’s chemical and biological weapons, among them the deadly VX nerve agent. Daniel Nasaw, WSJ, "U.S. Seeks ‘Major Disarmament’ of North Korea During Trump’s Term," 13 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biological weapon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of biological weapon

1918, in the meaning defined above

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Last Updated

25 Sep 2018

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Time Traveler for biological weapon

The first known use of biological weapon was in 1918

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More Definitions for biological weapon

biological weapon


English Language Learners Definition of biological weapon

: a harmful living thing (such as a germ that causes disease) used as a weapon in a war

biological weapon

biological weap·on | \-ˈwep-ən \

Medical Definition of biological weapon 

: 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

More from Merriam-Webster on biological weapon

Spanish Central: Translation of biological weapon Encyclopedia article about biological weapon

Comments on biological weapon

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exaggeratedly or childishly emotional

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