floodplain

noun

flood·​plain ˈfləd-ˌplān How to pronounce floodplain (audio)
1
: level land that may be submerged by floodwaters
2
: a plain built up by stream deposition

Examples of floodplain in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Their preferred habitats likely included open grasslands, forest edges and floodplains. Scott Travers, Forbes.com, 10 Sep. 2025 The permits dictate that cabins located in the floodplain — which includes most of the little community — cannot be rebuilt. Michael Slaten, Oc Register, 10 Sep. 2025 Its fourteen spacious canvas-and-thatch bedrooms look directly onto the floodplains, offering a front-row seat to the migration. Mazuba Kapambwe, AFAR Media, 10 Sep. 2025 Today, no homes can be built in a floodplain per Benbrook city ordinance. Matthew Adams, Fort Worth Star-Telegram, 8 Sep. 2025 See All Example Sentences for floodplain

Word History

First Known Use

1873, in the meaning defined at sense 1

Time Traveler
The first known use of floodplain was in 1873

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Cite this Entry

“Floodplain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/floodplain. Accessed 15 Sep. 2025.

Kids Definition

floodplain

noun
flood·​plain -ˌplān How to pronounce floodplain (audio)
1
: low flat land along a stream or river that may flood
2
: a plain built up from earth left by floodwaters

More from Merriam-Webster on floodplain

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