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Sludge vs Undefined - What's the difference?

sludge | undefined |

As an initialism sludge

is (emergency medicine) a mnemonic ("salivation, lacrimation, urination, defecation, gastrointestinal upset, emesis") used to identify the common symptoms of certain affections of a cholinergic toxidrome.

As an adjective undefined is

lacking a definition or value.

sludge

English

(wikipedia sludge)

Noun

  • A generic term for solids separated from suspension in a liquid.
  • * {{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=28, magazine=(The Economist)
    • , title= High and wet , passage=Floods in northern India, mostly in the small state of Uttarakhand, have wrought disaster on an enormous scale.
  • A residual semi-solid material left from industrial, water treatment, or wastewater treatment processes.
  • A sediment of accumulated minerals in a steam boiler.
  • A mass of small pieces of ice on the surface of a body of water.
  • (uncountable, music) sludge metal

    • Synonyms

    * (separated solids) mud, mire, ooze, slush

    Derived terms

    * activated sludge * oil sludge * sludge metal * sludgecore

    Verb

    (sludg)
  • (informal) to slump or slouch.
  • to slop or drip slowly.

    • undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined