- the artificial application of water to land to assist in the production of crops.
- Medicine/Medical. the flushing or washing out of anything with water or other liquid.
- the state of being irrigated.
Origin of irrigation
Examples from the Web for irrigation
Each year their fields need at least 53 billion cubic meters of water for irrigation.
The air mixed with fertilizers and pesticides that for decades were washed from the fields into the sea by irrigation water.
It thus falls to IS to provide drinking water and irrigation to massive areas of farmland.The ISIS Caliphate’s Frightening First Month
July 29, 2014
Egypt's future irrigation and industrial needs require a major increase in the northward flow of the Nile River.Open Memorandum: Elements of a Possible Peace Deal in Sudan
George Clooney, John Prendergast
November 6, 2010
Later: a tall, silo-like cement building, apparently used for irrigation.My Night on the Border
May 25, 2010
There was water in it; it was part of their irrigation system.Two Thousand Miles Below
Charles Willard Diffin
Irrigation there's just a question of power—that's how he looks at it.The Great Hunger
Irrigation is the sole means of fertilizing, and it seems to be all the soil requires.Aztec Land
Maturin M. Ballou
It will endure almost any amount of forcing, by liquid manures or irrigation.Cattle and Their Diseases
The water for irrigation is costly, and should be made to go as far as possible.Agriculture for Beginners
Charles William Burkett
Word Origin and History for irrigation
"a supplying of water to land," 1610s, from Latin irrigationem (nominative irrigatio) "a watering," noun of action from past participle stem of irrigare (see irrigate).
Artificial provision of water to sustain growing plants.