n. [ Gr. kry`os cold + E. hydrate. ] (Chem.) A substance, as salt, ammonium chloride, etc., which crystallizes with water of crystallization only at low temperatures, or below the freezing point of water. F. Guthrie. [ 1913 Webster ]

n. [ Gr. kry`os icy cold, frost + -lite: cf. F. cryolithe. ] (Min.) A fluoride of sodium and aluminum, found in Greenland, in white cleavable masses; -- used as a source of soda and alumina. [ 1913 Webster ]

n. [ Gr. &unr_; cold, frost + -meter. ] (Physics) A thermometer for the measurement of low temperatures, esp. such an instrument containing alcohol or some other liquid of a lower freezing point than mercury. [ Webster 1913 Suppl. ]

n. destruction of tissue by freezing and characterized by tingling, blistering and possibly gangrene.
Syn. -- frostbite. [ WordNet 1.5 ]

n. a morbid fear of freezing. [ WordNet 1.5 ]

n. [ NL., fr. Gr. kry`os icy cold, frost + fe`rein to bear. ] (Chem.) An instrument used to illustrate the freezing of water by its own evaporation. The ordinary form consists of two glass bulbs, connected by a tube of the same material, and containing only a quantity of water and its vapor, devoid of air. The water is in one of the bulbs, and freezes when the other is cooled below 32° Fahr. [ 1913 Webster ]

n. an instrument for measuring freezing and melting points. [ WordNet 1.5 ]

n. a thermostat that operates at very low temperatures. [ WordNet 1.5 ]