Definition of runoff in English:

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Pronunciation: /ˈrənäf/


1A further competition, election, race, etc., after a tie or inconclusive result.
Example sentences
  • Well, today's Ukrainian Supreme Court decision nullifies the results of the presidential run-off election.
  • He confounded all opinion polls by coming second in the presidential elections, as a result of which he entered the run-off elections against him.
  • A Prada skipper sailed out to the Hauraki Gulf Tuesday morning knowing it had to win the two races on the card to survive for a sudden-death run-off Wednesday against OneWorld.
2The draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc.
Example sentences
  • The main cause is excess nitrogen run-off from farm fertilizers, sewage and industrial pollutants.
  • But over time, fertilizer run-off from agriculture, for example, may load the lake with excess nutrients.
  • This run-off carries fertile matter from soils into the pond.
2.1The water or other material that drains freely off the surface of something.
Example sentences
  • The seeds of F. cernua disperse primarily by gravity and secondarily by surface water run-off after rare heavy rains.
  • Uncontaminated surface water run-off and rainwater from roofs shall be collected separately from slurry and shall be disposed of directly to the nearest drain, ditch, soakpit or watercourse.
  • Adding to the problem is extensive paving in large housing complexes, which causes fast run-off into storm water drains, which are then overloaded, causing the rivers to flood and wash down pollution.

For editors and proofreaders

Syllabification: run·off

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