riverbed

noun

riv·​er·​bed ˈri-vər-ˌbed How to pronounce riverbed (audio)
: the channel occupied by a river

Examples of riverbed 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.
News reports described how hormones in the runoff from pharmaceutical manufacturing were feminizing fish and detailed the high concentration of antibiotics discovered in riverbeds and sewage. Thomas J. Bollyky, Foreign Affairs, 22 July 2025 On the other hand, models that had high spatial resolution—taking into account all the hills, mountains, and riverbeds—could only be run over relatively short time spans. ArsTechnica, 13 July 2025 The new clue is the discovery of carbonate minerals found by the robotic Curiosity rover in the vicinity of Gale Crater – a region of Mars marked by dry riverbeds and other evidence of the waters that once flowed on the Red Planet two billion years ago. New Atlas, 12 July 2025 Minerals that disintegrate in the presence of oxygen were found locked up in ancient riverbeds older than a certain age. Laura Poppick, Rolling Stone, 30 June 2025 See All Example Sentences for riverbed

Word History

First Known Use

1781, in the meaning defined above

Time Traveler
The first known use of riverbed was in 1781

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Cite this Entry

“Riverbed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/riverbed. Accessed 22 Aug. 2025.

Kids Definition

riverbed

noun
riv·​er·​bed -ˌbed How to pronounce riverbed (audio)
: the channel occupied or once occupied by a river

More from Merriam-Webster on riverbed

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