Definition of: irrigate

(ir′ə·gāt) v.t. gat·ed, ·gat·ing
1. To supply (land) with water by means of ditches or other artificial channels.
2. Med. To moisten, as a wound, with dropping water, or spray, jet, etc.
3. Rare To moisten; wet. [<L irrigatus, pp. of irrigare bring water to <in- to + rigare water]
—ir′ri·ga·ble (ir′ə·gə·bəl) adjective
—ir′ri·ga′tor noun