salts or mixtures which neutralize acids

Usually a hydroxide of lithium, sodium, potassium, rubidium or cesium, but also the carbonates of these metals, ammonia, and the amines. (Grant & Hackh's Chemical Dictionary, 5th ed)

Any of various bases like hydroxides of sodium, potassium and lithium which neutralize acids.

Compounds capable of neutralizing acids.

Base compounds of sodium, potassium and alkaline earths which function as low-temperature fluxes for silica.