runoff

Definition

That portion of precipitation or irrigation on an area which does not infiltrate or evaporate, but instead is discharged from the area.

Etymology

Deverbal from run off.

Example Sentences

• "The next series of high tides or large waves will tend to rebuild the berm and redam the stream. Ultimately, increased runoff due to fall or winter rains will raise the stream level to the point where it breaks through."
• "The runoff of nitrates is poisoning the lake."
• "There will now be a runoff as neither front runner received more than 50% of the vote."