irrigation
irrigate + -ion
https://gyazo.com/81f7823b9630b627c347593ef7364ad8
source: Nevit Dilmen (talk) - 投稿者自身による作品, CC 表示-継承 3.0
noun
1. the supply of water to land or crops to help growth, typically by means of channels:
灌漑
e.g. the river supplies water for irrigation of agricultural crops
e.g. as modifier : sprinkler irrigation systems.
2. Medicine the process of washing out an organ or wound with a continuous flow of water or medication:
〘医〙 洗浄
e.g. for sinus congestion, saline nasal irrigation can be helpful.