DDT

Chemistry.
  1. a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. since 1973.

Origin of DDT

d(ichloro)d(iphenyl)t(richloroethane)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


Examples from the Web for ddt

Contemporary Examples of ddt

  • DDT, PCBs, and others have been shown to cause cancer, nervous system damage, and hormonal changes, according to Rochman.

    The Daily Beast logo
    Your Favorite Facewash Is Hurting Nemo

    Alexa C. Kurzius

    June 18, 2014

  • The disease remains a global scourge despite rapid advances in providing insecticide nets and spraying homes, mostly with DDT.

    The Daily Beast logo
    The Robot That Could Kill Malaria

    Eleanor Clift

    May 8, 2014

  • Three years later, the property was covered in asphalt to prevent the DDT in the soil from being carried by the wind.

    The Daily Beast logo
    Our Most Polluted States

    The Daily Beast

    May 19, 2010

  • She never stopped us when we chased the mosquito man's truck as it blew a cloud of DDT into our smiling faces.

    The Daily Beast logo
    Didn't I Feed You Yesterday?

    Laura Bennett

    October 5, 2008

Historical Examples of ddt


British Dictionary definitions for ddt

DDT

noun
  1. dichlorodiphenyltrichloroethane; a colourless odourless substance used as an insecticide. It is toxic to animals and is known to accumulate in the tissues. It is now banned in the UK
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ddt in Medicine

DDT

[dē′dē-tē]
n.
  1. Dichlorodiphenyltrichloroethane; a colorless contact insecticide, toxic to humans and animals when swallowed or absorbed through the skin, that has been banned in the United States for most uses since 1972.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

ddt in Science

DDT

[dē′dē-tē]
  1. Short for dichlorodiphenyltrichloroethane. A powerful insecticide that is also poisonous to humans and animals. It remains active in the environment for many years and has been banned in the United States for most uses since 1972 but is still in use in some countries in which malaria is endemic. Chemical formula: C14H9Cl5.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ddt in Culture

DDT

A colorless insecticide that kills on contact. It is poisonous to humans and animals when swallowed or absorbed through the skin. DDT is an abbreviation for dichlorodiphenyltrichloroethane.

Note

Although DDT, when it was first invented, was considered a great advance in protecting crops from insect damage and in combating diseases spread by insects (such as malaria), discoveries led to its ban in many countries. Residue from DDT has been shown to remain in the ecosystem and the food chain long after its original use, causing harm and even death to animals considered harmless or useful to man.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.