pesticide

The definition of a pesticide is a chemical or other substance used to kill unwanted insects or weeds.

(noun)

A spray used to kill ants is an example of apesticide.

See pesticide in Webster's New World College Dictionary

noun

any chemical used for killing insects, weeds, etc.

Origin: < pest + -cide

Related Forms:

See pesticide in American Heritage Dictionary 4

noun

A chemical used to kill pests, especially insects.

Related Forms:

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