- any of a large group of natural hydrous aluminum silicates of sodium, calcium, potassium, barium, etc., chiefly found in cavities in igneous rocks and characterized by a ready loss or gain of water of hydration: many are capable of ion exchange with solutions
- a similar natural or synthetic silicate, used for softening water
Origin of zeoliteSwedish zeolit ; from Classical Greek zein, to boil (see yeast): from its swelling up when heated
Any one of a family of hydrous alkali-aluminum silicate minerals, whose crystal lattice may enclose or sequester cations of sodium, potassium, magnesium, calcium, strontium, or barium, or a corresponding synthetic compound, used chiefly as molecular filters and ion-exchange agents.
Origin of zeoliteSwedish zeolit, from Greek zein, to boil (from its swelling and boiling under the blowpipe); see yes- in Indo-European roots.