biological warfare

noun

: warfare involving the use of biological weapons

also : warfare involving the use of herbicides

Examples of biological warfare in a Sentence

Recent Examples on the Web

Set against escalating Arctic ambitions by Russia and China, the story follows a Finnish family of operatives navigating military conflict, biological warfare, and global espionage as geopolitical tensions reach breaking point. —Max Goldbart, Deadline, 27 Jan. 2026

Directed by Zhao Linshan, the World War II drama is centered on Japan’s Unit 731 biological warfare program. —Naman Ramachandran, Variety, 13 Oct. 2025

Poop was also used in some of the earliest experiments for biological warfare. —Alison Foreman, IndieWire, 21 Aug. 2025

On the 80th anniversary of Japan’s surrender in WWII, the legacy of a biological warfare unit still haunts. —Christine Arrasmith, NPR, 15 Aug. 2025

Word History

First Known Use

1921, in the meaning defined above

Rhymes for biological warfare

• abwehr
• affair
• affaire
• airfare
• altair
• armchair
• aware
• beware
• bugbear
• carfare
• childcare
• compare

Kids Definition

biological warfare

noun

: warfare involving the use of biological weapons

Medical Definition

biological warfare

noun

biological war·​fare -ˈwȯr-ˌfa(ə)r, -ˌfe(ə)r 

: warfare involving the use of biological weapons

also : warfare involving the use of herbicides