Definition of DDT
: 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
Origin and Etymology of ddt
dichlor- + diphenyl + trichlor- (from tri- + chlor-)
First Known Use: 1943See Words from the same year
DDT Defined for English Language Learners
Definition of DDT for English Language Learners
: a poisonous chemical that was used especially in the past to protect plants from insects and that is now banned in the U.S.
Medical Definition of DDT
: 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
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