noun
: ion exchange in which one cation (as sodium or hydrogen) is substituted for one or more other cations (as calcium and magnesium in hard water) — called also base exchange
noun
: ion exchange in which one cation (as sodium or hydrogen) is substituted for one or more other cations (as calcium and magnesium in hard water) — called also base exchange
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012