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Noun: sludge  slúj
  1. The precipitate produced by sewage treatment
     
  2. Any thick, viscous matter
    - slime, goo [informal], goop [N. Amer, informal], gook [informal], guck [N. Amer, informal], gunk [informal], muck, ooze, thick, gloop [Brit, Cdn, informal]

Derived forms: sludges

Type of: matter, precipitate

Encyclopedia: Sludge

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SLR
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sluggishly