Agent Orange

noun

: an herbicide widely used as a defoliant in the Vietnam War that is composed of 2,4-D and 2,4,5-T and contains dioxin as a contaminant

Examples of Agent Orange in a Sentence

Recent Examples on the Web
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In 1984, Monsanto and six other chemical companies agreed to pay a $180 million settlement to Vietnam veterans who were exposed to the chemical herbicide Agent Orange during the Vietnam War. Chicago Tribune, 7 May 2026 ProPublica filed a lawsuit against the U.S. Department of Veterans Affairs on my behalf in 2016 seeking records related to the agency’s handling of Agent Orange, a defoliant used during the Vietnam War. Charles Ornstein, ProPublica, 30 Apr. 2026 Veterans of the Vietnam War exposed to Agent Orange have suffered from disabilities linked to the toxic exposure. Lisa Hagen, Hartford Courant, 28 Apr. 2026 On view concurrently with the MAC exhibition is a sculpture Colón made for El Yunque, the Puerto Rican rain forest—a natural wonder that was also a testing site for Agent Orange. Emily Watlington, ARTnews.com, 7 Apr. 2026 See All Example Sentences for Agent Orange

Word History

Etymology

so called from the identifying color stripe on its container

First Known Use

1970, in the meaning defined above

Time Traveler
The first known use of Agent Orange was in 1970

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Cite this Entry

“Agent Orange.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Agent%20Orange. Accessed 11 May. 2026.

Medical Definition

: an herbicide widely used as a defoliant in the Vietnam War that is composed of 2,4-D and 2,4,5-T and contains dioxin as a contaminant

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