alluvium

noun

Definition of alluviumnext
as in colluvium

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Example Sentences

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.
Recent Examples of alluvium What used to be open water was heading towards alluvium, and oblivion. — Rob Crossan, Condé Nast Traveler, 24 Mar. 2026 At some point, alluvium buried the entire tusk, possibly from major storm flooding. — Andrew Paul, Popular Science, 14 Aug. 2024 The tusk was covered with alluvium, possibly during a major flooding event, MDEQ said. — Meredith Deliso, ABC News, 13 Aug. 2024 These waters carried debris called alluvium, that makes up the Delta's fertile soil. — Richard Mason, Arkansas Online, 23 May 2021 Scott traces their advent to a few hundred years later, in a constellation of cities that sprang up on the Mesopotamian alluvium around what was then the northern end of the Persian Gulf. — Tim Flannery, The New York Review of Books, 12 Mar. 2020
Recent Examples of Synonyms for alluvium
  1. sediment
  2. silt
  3. loess
  4. marl
  5. detritus
  6. clay
Noun
  • These might all show up in future sediments, many millions of years from now.
    — Laura Paddison, CNN Money, 25 July 2026
  • Most of these contaminants wash off the road and end up in streams and sediments.
    — Nathaniel Warner, The Conversation, 24 July 2026
Definition of sediment
Noun
  • The water drew back from the house, left a thick, stinking silt across the floor.
    — Literary Hub, Literary Hub, 16 July 2026
  • The valley floor is silt and loess left by the ice-age Missoula Floods, the glacial-lake megafloods that repeatedly drowned the region.
    — Paul Caputo, Forbes.com, 30 June 2026
Definition of silt
Noun
  • The base played a critical role in national defense, housing a command bunker, planted deep into the regional loess, that was designed to withstand a nuclear blast.
    — Literary Hub, Literary Hub, 10 July 2026
  • The Rhône's predominantly granite soils versus Walla Walla's basalt bedrock, riverbed cobbles, and windblown loess.
    — Paul Caputo, Forbes.com, 30 June 2026
Definition of loess
Noun
  • Freshman Ben Smith became the first NCAA outdoor champion for Oregon in the shot put since Dean Crouser (1982) with a marl of 69-0 1/2.
    — ABC News, ABC News, 11 June 2026
  • Its striking blue-green hues and clarity—allowing visibility of 20 to 30 feet—are due to minimal organic runoff and calcium-rich marl sediment from its glacial origins.
    — Taryn White, Travel + Leisure, 21 May 2026
Definition of marl
Noun
  • In the next round of Count the Rice, the rice is mixed into a large box full of paper, styrofoam, and other detritus.
    — Tasha Robinson, Vulture, 14 July 2026
  • Based on carbon dating and artifacts, detritus and animal remains found at the site, Carr and others concluded the circle had likely been the foundation for a wooden ceremonial building dating back around 2,000 years.
    — Andres Viglucci, Miami Herald, 30 June 2026
Definition of detritus
Noun
  • Investigators also seized boxes that had been resealed and were ready to ship, packages containing modeling clay instead of fragrance products, additional modeling clay, a heat gun, glue and packaging materials, according to the Sheriff’s Office.
    — Angelique Brenes, PEOPLE, 25 July 2026
  • Sinner, 24, won the first five Masters 1000 events of 2026, including two on hardcourts (Indian Wells and Miami) and three on clay (Monte Carlo, Madrid, Rome).
    — Adam Zagoria, Forbes.com, 25 July 2026
Definition of clay

Browse Nearby Words

alluvions
alluvium
alluviums
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Cite this Entry

“Alluvium.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/alluvium. Accessed 1 Aug. 2026.

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More from Merriam-Webster on alluvium

Britannica.com: Encyclopedia article about alluvium

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