Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

DDT

play
noun \ˌdē-(ˌ)dē-ˈtē\

Simple Definition of DDT

  • : a poisonous chemical that was used especially in the past to protect plants from insects and that is now banned in the U.S.

Source: Merriam-Webster's Learner's Dictionary

Full Definition of DDT

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

Origin and Etymology of ddt

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


First Known Use: 1943


Medical Dictionary

DDT

play
noun \ˌdē-(ˌ)dē-ˈtē\

Medical Definition of DDT

  1. :  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




Learn More about ddt


Seen and Heard

What made you want to look up DDT? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a very small amount

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommodate accomodate acommadate accommodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ