sludge

play
noun \ ˈsləj \

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
3 :slush 5

sludgy

play \ˈslə-jē\ adjective

Examples of sludge in a Sentence

  1. after a day of heavy rain, the fairgrounds had turned into pure sludge

  2. I can't bring myself to read that sludge.

Recent Examples of sludge from the Web

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.

Origin and Etymology of sludge

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

sludge Synonyms

Synonyms
guck (or gook), mire, muck, ooze, slime, slop, mud, slush
Related Words
gumbo, silt; clay, dirt, gravel, humus, loam, sand, soil

SLUDGE Defined for English Language Learners

sludge

play
noun

Definition of sludge for English Language Learners

  • : 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 Defined for Kids

sludge

play
noun \ ˈsləj \

Definition of sludge for Students

:a soft muddy mass resulting from sewage treatment

Medical Dictionary

1

sludge

play
noun \ ˈsləj \

medical Definition of sludge

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

2

sludge

intransitive verb

medical Definition of sludge

sludged; sludging
:to form sludge
  • positions that cause blood to sludge
  • —L. K. Altman


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