Main Entry: ze·o·lite

Pronunciation: \ˈzē-ə-ˌlīt\

Function: noun

: any of various hydrous silicates that can act as ion exchangers ; also : any of various natural or synthesized silicates of similar structure used in water softening and as adsorbents

—ze·o·lit·ic \ˌzē-ə-ˈlit-ik\ adjective