D defs.my
Entry 1 sense Webster, 1913

Irrigation

/ĭrˌ-əg-āsh'-ən/ · Ir·ri·ga·tion · IPA /ˌɪɹəˈɡeɪʃən/
01 n. The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nouri…
  1. 1.
    The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nourishing plants.