- zeolite
- A naturally occurring hydrated sodium aluminum silicate, Na2O Al2O3 (SiO2)x (H2O)x, used for softening of hard water by exchanging its Na+ for the Ca2+ of the water; thus z. is an ion exchanger. Some synthetic ion exchangers are termed synthetic zeolites, although there is no chemical relationship.
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ze·o·lite 'zē-ə-.līt n 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 adsorbentsze·o·lit·ic .zē-ə-'lit-ik adj* * *
ze·o·lite (zeґo-lit) any of a group of hydrated aluminum silicate minerals; some have ion-exchange properties and others are used as absorbents or filters. See also erionite.
Medical dictionary. 2011.
См. также в других словарях:
Zeolite — e o*lite, n. [Gr. ? to boil + lite: cf. F. z[ e]olithe.] (Min.) A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, soda, potash, or rarely baryta. Here are included natrolite, stilbite,… … The Collaborative International Dictionary of English
zeolite — [zē′ə līt΄] n. [Swed zeolit < Gr zein, to boil (see YEAST): from its swelling up when heated] 1. any of a large group of natural hydrous aluminum silicates of sodium, calcium, potassium, barium, etc., chiefly found in cavities in igneous rocks … English World dictionary
Zeolite — Zeolites (Greek, zein , to boil ; lithos , a stone ) are hydrated aluminosilicate minerals and have a micro porous structure. The term was originally coined in the 18th century by a Swedish mineralogist named Axel Fredrik Cronstedt who observed,… … Wikipedia
zéolite — zéolithe ou zéolite [ zeɔlit ] n. f. • 1783, 1756; du gr. zeô, zein « bouillonner » et lithe ♦ Minér. Silicate naturel hydraté dont les gisements se rencontrent surtout dans les cavités des laves basiques. Zéolithes artificielles. ● zéolite ou… … Encyclopédie Universelle
zeolite — zeolitic /zee euh lit ik/, adj. /zee euh luyt /, n. Mineral. any of a group of hydrated silicates of aluminum with alkali metals, commonly occurring as secondary minerals in cavities in basic volcanic rocks: used for their molecular sieve… … Universalium
Zeolite — Zéolithe Zéolithe … Wikipédia en Français
Zéolite — Zéolithe Zéolithe … Wikipédia en Français
zeolite — Any of a large family of crystalline metal oxide materials characterized by the presence of extensive regular interconnected pore systems. Most are based on mixtures of aluminum and silicon oxides, while others have phosphorous and other elements … Petroleum refining glossary
zeolite — noun Etymology: Swedish zeolit, from Greek zein to boil + o + Swedish lit lite, from French lite more at yeast Date: circa 1777 any of various hydrous silicates that are analogous in composition to the feldspars, occur as secondary minerals in… … New Collegiate Dictionary
zeolite — an ammonia removing, ion exchange resin used in freshwater aquaria. It also can act biologically and mechanically. Does not last long and must be regenerated by soaking in a strong salt solution for a day. Particularly useful for temporary… … Dictionary of ichthyology
zeolite — noun Any of several minerals, aluminosilicates of sodium, potassium, calcium or magnesium, that have a porous structure; they are used in water softeners and in ion exchange chromatography … Wiktionary
