zeolite
(noun) any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks
Source: WordNet® 3.1
zeolite (countable and uncountable, plural zeolites)
(mineral) 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.
Source: Wiktionary
Ze"o*lite, n. Etym: [Gr. -lite: cf. F. zéolithe.] (Min.)
Definition: 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, analcime, chabazite, thomsonite, heulandite, and others. These species occur of secondary origin in the cavities of amygdaloid, basalt, and lava, also, less frequently, in granite and gneiss. So called because many of these species intumesce before the blowpipe. Needle zeolite, needlestone; natrolite.
Source: Webster’s Unabridged Dictionary 1913 Edition
26 March 2025
(noun) bandage consisting of a firm covering (often made of plaster of Paris) that immobilizes broken bones while they heal
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.
