a colorless, crystalline, water-soluble, poisonous powder, H 2 SeO 3 , used chiefly as a reagent.
a white soluble crystalline strong dibasic acid analogous to sulphurous acid. Formula: H2SeO3
noun 1. Mineralogy. a variety of gypsum, found in transparent crystals and foliated masses. 2. Chemistry. a salt of selenious acid. noun 1. a colourless glassy variety of gypsum
noun, Chemistry. 1. a nonmetallic element chemically resembling sulfur and tellurium, occurring in several allotropic forms, as crystalline and amorphous, and having an electrical resistance that varies under the influence of light. Symbol: Se; atomic weight: 78.96; atomic number: 34; specific gravity: (gray) 4.80 at 25°C, (red) 4.50 at 25°C. noun 1. a nonmetallic element […]
noun, Classical Mythology. 1. Sirius (def 2).
woody district; shaggy, a place among the mountains of Ephraim, bordering on Benjamin, to which Ehud fled after he had assassinated Eglon at Jericho (Judg. 3:26, 27).