: a colorless odorless water-insoluble insecticide C14H9Cl5 that is an aromatic organochlorine banned in the U.S. that tends to accumulate and persist in ecosystems and has toxic effects on many vertebrates

Examples of DDT 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.
Pesticide called ‘new DDT’ has been found in CT waterways. John Moritz, Hartford Courant, 16 May 2025 Trump World’s 2028 Succession Struggle The National Pulse: DDT Network Emerges as Hub for Never Trump Operatives NOTUS’s Liz Skalka: The Activist Who Persuaded Republicans To Target Trans Rights Copyright 2025 Nexstar Media Inc. Emily Brooks, The Hill, 13 May 2025 He is celebrated for his chillingly intelligent and captivating promos, his masterful understanding of ring psychology, and for innovating the iconic DDT finishing maneuver. Andrew Ravens‎, MSNBC Newsweek, 13 May 2025 By the mid-1980s, biochemists at Michigan State University were publishing evidence that, in experimental conditions, this crust fungus could degrade pollutants like the insecticide DDT, polychlorinated biphenyls and polycyclic aromatic hydrocarbons. Lauren Oster, Smithsonian Magazine, 12 May 2025 See All Example Sentences for DDT

Word History

Etymology

dichlor- + diphenyl + trichlor- (from tri- + chlor-)

First Known Use

1943, in the meaning defined above

Time Traveler
The first known use of DDT was in 1943

Browse Nearby Words

Cite this Entry

“DDT.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/DDT. Accessed 25 May. 2025.

Kids Definition

: a colorless formerly used insecticide that is poisonous to many animals with backbones

Medical Definition

: a colorless odorless water-insoluble crystalline insecticide C14H9Cl5 that tends to accumulate in ecosystems and has toxic effects on many vertebrates

called also chlorophenothane, dicophane

More from Merriam-Webster on DDT

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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