Dictionary.com
Thesaurus.com
Synonyms

herbicide

American  
[hur-buh-sahyd, ur-] / ˈhɜr bəˌsaɪd, ˈɜr- /

noun

  1. a substance or preparation for killing plants, especially weeds.


herbicide British  
/ ˈhɜːbɪˌsaɪd /

noun

  1. a chemical that destroys plants, esp one used to control weeds

"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

herbicide Scientific  
/ hûrbĭ-sīd′,ûr- /
  1. A pesticide used to kill weeds. Paraquat is a herbicide.

  2. Compare fungicide insecticide rodenticide


Other Word Forms

Etymology

Origin of herbicide

First recorded in 1895–1900; herb + -i- + -cide

Explanation

A chemical that's used on lawns or gardens to kill weeds is an herbicide. When herbicides are used on food crops, they target unwanted plants but leave the crops unharmed. Some towns and cities have banned certain herbicides, fearing that they're not safe for humans, pets, and other animals. In many instances, herbicides are seen as a necessity for growing large crops or controlling invasive weeds that threaten structures as well as lawns and gardens. The word herbicide comes from the Latin roots herba, "grass, turf, or vegetation," and the suffix -cide, "killer."

Keep Reading on Vocabulary.com

Vocabulary lists containing herbicide

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This week, Foley announced that the Orange County Public Works Department had begun a “pause” of herbicide spraying in flood channels countywide.

From Los Angeles Times • May 15, 2026

One of its new products is a camera that can distinguish between a plant and a weed, reducing herbicide use and saving farmers money.

From Barron's • May 6, 2026

Durnell and other plaintiffs argue the company should go further in how it warns farmers and landscapers of the risks the herbicide may pose.

From The Wall Street Journal • Apr. 27, 2026

Then came the 1970s, and a new technology arrived: the herbicide glyphosate, created by Monsanto.

From Slate • Apr. 20, 2026

But Americans pronounce the h in herbaceous, herbicide, and herbivore.

From "Woe Is I" by Patricia T. O'Conner

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "herbicide" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com