sludge

noun
\ ˈsləj How to pronounce sludge (audio) \

Definition of sludge

1 : mud, mire especially : a muddy deposit (as on a riverbed) : ooze
2 : a muddy or slushy mass, deposit, or sediment: such as
a : precipitated solid matter produced by water and sewage treatment processes
b : muddy sediment in a steam boiler
c : a precipitate or settling (such as a mixture of impurities and acid) from a mineral oil

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Other Words from sludge

sludgy \ ˈslə-​jē How to pronounce sludgy (audio) \ adjective

Synonyms for sludge

Synonyms

guck (or gook), mire, muck, mud, ooze, slime, slop, slush

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Examples of sludge in a Sentence

after a day of heavy rain, the fairgrounds had turned into pure sludge I can't bring myself to read that sludge.

Recent Examples on the Web

Nineteen people were killed, hundreds were left homeless and hundreds of miles of river valleys were polluted by the toxic sludge. Jeffrey T. Lewis, WSJ, "Death Toll in Brazilian Mining-Dam Disaster Jumps to 34," 26 Jan. 2019 Residents have watched the river’s water turn red as it has been contaminated by the mining sludge released by Friday’s accident. Jeffrey T. Lewis, WSJ, "Brazilian Town Devastated by Dam Burst Faces Threat From Second Dam," 27 Jan. 2019 Now push a thick rag through the trap to wipe out any stuck-on sludge or debris. Joseph Truini, Popular Mechanics, "How to Unclog a Drain," 26 Jan. 2019 The containers are loaded with a material called sewer sludge or biosolids, which is the solid material left behind after conventional wastewater treatment processes. Dennis Pillion, AL.com, "New York poop train won't derail Parrish Coal Fest," 6 Apr. 2018 The water boils off and all that's left is a few teaspoonfuls of sludge. Mike Allen, Popular Mechanics, "How to Dispose of Hazardous Waste Without Damaging the Environment," 9 Oct. 2018 The bright green sludge oozed onto docks, dams and rivers. James Rogers, Fox News, "Blue-green toxic algae invades Florida river," 15 Aug. 2018 Vests are accented with sponsor patches, like the sludge-green emblem of Monster Energy or the dandelion-yellow logo of NAPA Auto Parts. Liana Satenstein, Vogue, "The Bold and the Beautiful Style of Professional Bull Riders," 7 Jan. 2019 Big Sky has been using local rail yards to transfer shipping containers full of sludge from trains to trucks to haul them to the landfill. Dennis Pillion, AL.com, "Last of the New York sewage sludge cars leaves Parrish," 19 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sludge.' 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 sludge

15th century, in the meaning defined at sense 1

History and Etymology for sludge

Middle English slugge, perhaps alteration of slicche mud, slush; akin to Old High German slīh mire

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Dictionary Entries near sludge

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slub yarn

slud

sludge

sludge acid

sludger

slue

Statistics for sludge

Last Updated

1 Apr 2019

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Time Traveler for sludge

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

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More Definitions for sludge

sludge

noun

English Language Learners Definition of sludge

: thick, soft, wet mud
: a soft, thick material that is produced in various industrial processes (such as in the treatment of sewage)
: a thick material that can form in the oil in an engine and cause engine problems

sludge

noun
\ ˈsləj How to pronounce sludge (audio) \

Kids Definition of sludge

: a soft muddy mass resulting from sewage treatment

sludge

noun
\ ˈsləj How to pronounce sludge (audio) \

Medical Definition of sludge

 (Entry 1 of 2)

: a semisolid precipitated mass or deposit biliary sludge especially : sludged blood
sludged; sludging

Medical Definition of sludge (Entry 2 of 2)

: to form sludge positions that cause blood to sludge— L. K. Altman

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More from Merriam-Webster on sludge

Rhyming Dictionary: Words that rhyme with sludge

Thesaurus: All synonyms and antonyms for sludge

Spanish Central: Translation of sludge

Nglish: Translation of sludge for Spanish Speakers

Britannica English: Translation of sludge for Arabic Speakers

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