pesticide

[ pes-tuh-sahyd ]
/ ˈpɛs təˌsaɪd /

noun

a chemical preparation for destroying plant, fungal, or animal pests.

Origin of pesticide

First recorded in 1935–40; pest + -i- + -cide
Also called biocide.

Related forms

pes·ti·cid·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pesticide

British Dictionary definitions for pesticide

pesticide

/ (ˈpɛstɪˌsaɪd) /

noun

a chemical used for killing pests, esp insects and rodents

Derived Forms

pesticidal, adjective
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

Medicine definitions for pesticide

pesticide

[ pĕstĭ-sīd′ ]

n.

A chemical used to kill pests, especially insects.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for pesticide

pesticide

[ pĕstĭ-sīd′ ]

A chemical used to kill harmful animals or plants. Pesticides are used especially in agriculture and around areas where humans live. Some are harmful to humans, either from direct contact or as residue on food, or are harmful to the environment because of their high toxicity, such as DDT (which is now banned in many countries). Pesticides include fungicides, herbicides, insecticides, and rodenticides. See more at fungicide herbicide insecticide.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.