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runoff

runoff

26 3.8
Water that flows over land after rain because the ground cannot absorb it
  • noun
  • /ˈrʌnˌɔf/
  • US
translation icon : escorrentía
  • We tend to think of runoff water as the source of pollutants in rivers, lakes, and estuaries.
  • stormwater runoff
  • water runoff
  • agricultural runoff

So right now what you have in the the Missouri, Mississippi is runoff.

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Examples

  • The whole town's sitting on a system of aqueducts... runoff from the mountains.

  • Eager to protect wildlife, the city is working on a plan to reduce fertilizer runoff into local waterways.

  • So we did get some water runoff, not much, but a little bit from my in laws grass.

  • It's industrial runoff from the soap factory down the street!

  • It's all glacial runoff, and for some reason it looks like that.

  • Now Natural Resources, they think it's feeding off the nutrients in the water from the chicken runoff.

  • While that is largely true, runoff is not the only source of pollution.

    Academic text (1999)
  • And now the runoff of the mining from the Denay land has contaminated all of their water supply.

  • This level has bilge pumps on it for storm runoff.

  • There are elevations of drainage details and plans for runoff and sediment control.

    Academic text (2012)

Synonyms

stormwater
vsrunoff
  • Specialized
7 3.5

Rain that runs off streets and roofs into drains instead of soaking into the ground

is broader, meaning any liquid running over a surface after it cannot be absorbed

Antonyms

27 6.1

Keeping something harmful under control so it does not spread

absorption
  • Specialized
21 4.6

A material takes in energy or a substance from another material

How Much

flooding
136 2.1
runoff
  • US
26 3.8

Surface Forms

runoff singular
runoffs plural

Morphology

runoff = run + off (transparent) = run + off

Literal composition: water that 'runs off' a surface; B1 learners can derive this meaning from the parts.

Etymology

Runoff for water comes from the words run and off, meaning 'to flow away'. Think of rain that runs off a roof or field into a stream, which is why runoff means water that flows away after a storm.