hydroxide
hy.drox.ide \hi--'dra:k-.si-d\ n [ISV] 1: a compound of hydroxyl with an element or radical 2: any of various hydrated oxides regarded as containing hydroxyl
hy.drox.ide \hi--'dra:k-.si-d\ n [ISV] 1: a compound of hydroxyl with an element or radical 2: any of various hydrated oxides regarded as containing hydroxyl