pesticide

noun pes·ti·cide \ ˈpe-stə-ˌsīd \
Updated on: 21 Nov 2017

Definition of pesticide

: an agent used to destroy pests

pesticidal

play \ˌpe-stə-ˈsī-dᵊl\ adjective

Recent Examples of pesticide from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pesticide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pesticide

circa 1925


PESTICIDE Defined for English Language Learners

pesticide

noun

Definition of pesticide for English Language Learners

  • : a chemical that is used to kill animals or insects that damage plants or crops


PESTICIDE Defined for Kids

pesticide

noun pes·ti·cide \ ˈpe-stə-ˌsīd \

Definition of pesticide for Students

: a substance used to destroy pests (as insects or weeds)

Medical Dictionary

pesticide

noun pes·ti·cide \ ˈpes-tə-ˌsīd \

medical Definition of pesticide

: an agent used to destroy pests


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

sticky or viscid

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!