[ in-sek-tuh-sahyd ]
/ ɪnˈsɛk təˌsaɪd /


a substance or preparation used for killing insects.
the act of killing insects.

Origin of insecticide

First recorded in 1860–65; insect + -i- + -cide

OTHER WORDS FROM insecticide

in·sec·ti·cid·al, adjectivenon·in·sec·ti·cid·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for insecticide

British Dictionary definitions for insecticide

/ (ɪnˈsɛktɪˌsaɪd) /


a substance used to destroy insect pests

Derived forms of insecticide

insecticidal, 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

Medical definitions for insecticide

[ ĭn-sĕktĭ-sīd′ ]


A chemical substance that kills insects.

Other words from insecticide

in•sec′ti•cidal (-sīdl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for insecticide

[ ĭn-sĕktĭ-sīd′ ]

A pesticide used to kill insects. Chlordane and DDT are insecticides. Compare fungicide herbicide rodenticide.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.