Wastewater

noun

Definitions

Noun
  1. 1
    Any water that has been used in some human domestic or industrial activity and, as a result, now contains waste products. countable, uncountable

    "Near-synonyms: sewage, sullage, graywater, blackwater, washwater, poop water (informal)"

  2. 2
    water mixed with waste matter wordnet

Etymology

From waste + water.

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