(intransitive, informal) To slump or slouch. / (intransitive) To slop or drip slowly.

Solids separated from suspension in a liquid. / A residual semi-solid material left from industrial, water treatment, or wastewater treatment processes.

(emergency medicine, mnemonic) An acronym used to help remember the common symptoms of certain affections of a cholinergic toxidrome: "salivation, lacrimation, urination, defecation, gastrointestinal upset, emesis".

plural of sludge

simple past tense and past participle of sludge

present participle of sludge

Sewage that has been aerated and agitated in order to promote the growth of beneficial microorganisms that break down organic matter.

plural of sludge hole

The hand-hole, or manhole, in a steam boiler, by means of which sediment can be removed.

Impure dark-coloured sulphuric acid that has been used in the refining of petroleum.