pig·​weed | \ ˈpig-ˌwēd How to pronounce pigweed (audio) \

Definition of pigweed

: any of various vigorous weedy plants especially of the goosefoot or amaranth families

Examples of pigweed in a Sentence

Recent Examples on the Web

The scientists are testing the machine on a range of species, including pigweed. Brooke Borel, Scientific American, "Weeds Are Winning the War against Herbicide Resistance," 18 June 2018 Weed scientist Muthu Bagavathiannian had no trouble finding herbicide-resistant pigweed, which can produce up to a million seeds per plant compared to cotton’s 200 to 300. Lynn Brezosky, San Antonio Express-News, "A&M cotton research could open new front in war on weeds," 5 July 2018 Herbicide resistance can work in many different ways; take glyphosate-resistant Palmer amaranth (Amaranthus palmeri), or pigweed, for example. Brooke Borel, Scientific American, "Weeds Are Winning the War against Herbicide Resistance," 18 June 2018 Peppers + Pigweed Leafminers preferred both pigweed and ragweed to pepper plants in a study at the Coastal Plains Experiment Station in Tifton, Georgia. The Editors Of Organic Life, Good Housekeeping, "26 Plants You Should Always Grow Side-By-Side," 3 Feb. 2017 For five decades, dicamba was used to kill pests such as pigweed at the beginning of the soybean and cotton planting season. Paul Feldman, kansascity, "High-stakes battle over dicamba pesticide pits farmer against farmer | The Kansas City Star," 3 May 2018 Spiked in the middle of those 17 years of mediocre-to-terrible baseball, 1993 stands out like a single sunflower in an acre of pigweed. Mike Sielski, Philly.com, "Darren Daulton's death a reminder of how special '93 Phillies really were | Mike Sielski," 8 Aug. 2017 Red root pigweed can be cooked by itself or with other greens. Cindy Sutter, The Denver Post, "Weeds to pull, or greens to harvest? Turning edible “weeds” into dinner," 7 Apr. 2017 One red root pigweed plant can produce 100,000 seeds that can continue to germinate over the next 15 to 20 years. Don Sorrell, Cincinnati.com, "Weed control in the vegetable garden," 29 June 2017

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

See More

First Known Use of pigweed

circa 1801, in the meaning defined above

Keep scrolling for more

Learn More about pigweed

Statistics for pigweed

Look-up Popularity

Time Traveler for pigweed

The first known use of pigweed was circa 1801

See more words from the same year

Keep scrolling for more

More Definitions for pigweed


pig·​weed | \ ˈpig-ˌwēd How to pronounce pigweed (audio) \

Medical Definition of pigweed

: any of several plants of the genus Amaranthus (as A. retroflexus and A. hybridus) with pollen that acts as a hay fever allergen

More from Merriam-Webster on pigweed

Rhyming Dictionary: Words that rhyme with pigweed

Britannica.com: Encyclopedia article about pigweed

Comments on pigweed

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


to mark by some ceremony or observation

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Syn City

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

Love words? Need even more definitions?

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