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zeptosecond
Zermatt
zero
zero-balance account
zero-base
zero-coupon
zero-defect
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zeolite
ze·o·lite [ z ə lt ]


noun 
Definition:
 
silicate mineral: one of a large group of amorphous hydrated aluminum silicate minerals containing various other elements. Source: weathered igneous rocks, hydrothermal veins. Use: water purification.
[Late 18th century. < Greek zein "to boil"]

ze·o·lit·ic [ z ə líttik ] adjective
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