Linked from
The 37 pages that link to Hydroxide, each with the reason it gives.
Polyatomic ionBroader topic: Hydroxide is a basic ion whose reactions often involve proton transfer.
Brønsted–Lowry baseBroader topic: It exemplifies a charged base in aqueous neutralization.
Arrhenius baseBroader topic: Arrhenius bases raise its concentration in aqueous solution.
Copper(II) hydroxideBroader topic: Two hydroxide ions balance the +2 charge of each copper ion.
Caesium hydroxideBroader topic: Dissolved CsOH releases this ion, which drives its basic behavior.