silt

noun
\ ˈsilt How to pronounce silt (audio) \

Definition of silt

 (Entry 1 of 2)

1 : loose sedimentary material with rock particles usually ¹/₂₀ millimeter or less in diameter also : soil containing 80 percent or more of such silt and less than 12 percent of clay
2 : a deposit of sediment (as by a river)

silt

verb
silted; silting; silts

Definition of silt (Entry 2 of 2)

intransitive verb

: to become choked or obstructed with silt often used with upthe channel silted up

transitive verb

: to choke, fill, cover, or obstruct with silt or mud

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Other Words from silt

Noun

silty \ ˈsil-​tē How to pronounce silty (audio) \ adjective

Verb

siltation \ sil-​ˈtā-​shən How to pronounce siltation (audio) \ noun

Examples of silt in a Sentence

Verb The entrance to the creek had silted shut.
Recent Examples on the Web: Noun Last year, Joynal left his family’s semi-permanent dwelling on a remote sand bar in the Brahmaputra River, one of many that form and re-form as silt washes down from the Himalayas, to go cut wood. Joseph Allchin, The New York Review of Books, "Why Hindu Nationalists Trialed India’s Citizenship Law in Assam," 6 Jan. 2020 Nebraska Brownville: Federal inspectors plan to review how well a nuclear power plant handled a water service safety problem blamed on a silt buildup from the Missouri River, which overwhelmed or broke through levees last spring. USA TODAY, "Butter Gritty, radish stink, goatnapping: News from around our 50 states," 3 Jan. 2020 The rocks fall to the ground in a big pile, and silt settles in riffles on the sloping ramp of the sluice. Nell Zink, Harper's magazine, "The Bird Angle," 28 Oct. 2019 Within the lake itself, peat and organic-rich mud and silt deposits upwards of 6-meters thick have accumulated at least since the peak of the last ice age more than 20,000 years ago. Christopher R. Moore, The Conversation, "New evidence that an extraterrestrial collision 12,800 years ago triggered an abrupt climate change for Earth," 22 Oct. 2019 The reserve has been fighting the silt battle for many years, devising projects such as a set of de-silting basins at the base of Goat Canyon to capture the harmful runoff before in enters sensitive habitat areas. San Diego Union-Tribune, "Volunteers celebrate 10 years of combating silt, pollution in Tijuana River Valley," 5 Oct. 2019 Properly maintained silt fences and other techniques can make a difference during construction. Dennis Pillion | Dpillion@al.com, al, "Black Warrior waterdog warns of degraded waterways in Alabama," 25 Oct. 2019 Scientists and volunteers are clearing rivers along the Shiretoko Peninsula, where anything from silt to concrete dams can prevent wild salmon from returning to spawn. Author: Simon Denyer, Chris Mooney, Anchorage Daily News, "The climate chain reaction that threatens the heart of the Pacific," 13 Nov. 2019 The southwest Louisiana refuge has been a site for research to reduce coastal erosion, such as finding ways to build stone breakwaters light enough not to sink in the soft silt near what remains of the shore. USA TODAY, "‘Nightmare’ roof, fire-starting drones, Pennywise Jeep: News from around our 50 states," 29 Oct. 2019 Recent Examples on the Web: Verb But in the 1860s, gold mining and timbering had begun to silt up the high mountain spawning beds, covering and suffocating their eggs. Patrick Symmes, Harper's magazine, "The $68,000 Fish," 28 Oct. 2019 But neither removes the desert of sand that still silts up the wheels of Indian commerce. The Economist, "India Inc is growing disenchanted with Narendra Modi," 17 Aug. 2019 Meanwhile, Fort Bend County Precinct 3 Commissioner Andy Meyers said crews have de-silted the channel at the north end of the county except for the portion on U.S. Army Corps of Engineers (USACE) property. Karen Zurawski, Houston Chronicle, "Officials look for solutions to flooding in Katy, greater Houston area," 9 Apr. 2018 And once that soil was gone, it was gone for good, silting up the seabed and exposing the old bony rock beneath Europe’s soft topside. Bella Bathurst, Newsweek, "Kill the Plough, Save Our Soils," 29 May 2014 Elsewhere in the state, a smattering of farmers are trying other techniques for capturing nitrate—collecting it in engineered wetlands on their soggier fields, for example, or in silted-in oxbow river bends excavated to hold more water. National Geographic, "The Simple River-Cleaning Tactics That Big Farms Ignore," 7 Dec. 2017 Soon, piers and warehouses were abandoned, General Electric was poisoning the Hudson with PCBs and the East River had silted up and become a de facto dump, with rusted cars clustering around the base of the Brooklyn Bridge. Gina Levay, Smithsonian, "How New York City Is Rediscovering Its Maritime Spirit," 29 May 2017 In the end, the studies showed that changes in the tide dynamics would be detrimental to the environment — and that the barrages would silt up very quickly. Nancy Lord, Alaska Dispatch News, "Fascinating book on tides includes Alaska," 12 Aug. 2017 Soon, piers and warehouses were abandoned, General Electric was poisoning the Hudson with PCBs and the East River had silted up and become a de facto dump, with rusted cars clustering around the base of the Brooklyn Bridge. Gina Levay, Smithsonian, "How New York City Is Rediscovering Its Maritime Spirit," 2 May 2017

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

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First Known Use of silt

Noun

15th century, in the meaning defined at sense 1

Verb

1799, in the meaning defined at intransitive sense

History and Etymology for silt

Noun

Middle English cylte, probably of Scandinavian origin; akin to Norwegian dialect sylt beach flooded at high tide; akin to Old High German sulza salt marsh, Old English sealt salt

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Time Traveler for silt

Time Traveler

The first known use of silt was in the 15th century

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Statistics for silt

Last Updated

15 Jan 2020

Cite this Entry

“Silt.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/siltier. Accessed 26 January 2020.

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More Definitions for silt

silt

noun
How to pronounce silt (audio)

English Language Learners Definition of silt

 (Entry 1 of 2)

: sand, soil, mud, etc., that is carried by flowing water and that sinks to the bottom of a river, pond, etc.

silt

verb

English Language Learners Definition of silt (Entry 2 of 2)

: to become blocked, filled, or covered with silt
: to block, fill, or cover (something) with silt

silt

noun
\ ˈsilt How to pronounce silt (audio) \

Kids Definition of silt

 (Entry 1 of 2)

1 : particles of small size left as sediment from water
2 : a soil made up mostly of silt and containing little clay

silt

verb
silted; silting

Kids Definition of silt (Entry 2 of 2)

: to fill, cover, or block with silt

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More from Merriam-Webster on silt

Thesaurus: All synonyms and antonyms for silt

Rhyming Dictionary: Words that rhyme with silt

Spanish Central: Translation of silt

Nglish: Translation of silt for Spanish Speakers

Britannica English: Translation of silt for Arabic Speakers

Britannica.com: Encyclopedia article about silt

Comments on silt

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