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As, symbol for the element arsenic arsenic , a semimetallic chemical element; symbol As; at. no. 33; at. wt. 74.9216; m.p. 817°C; (at 28 atmospheres pressure); sublimation point 613°C;; sp. gr. (stable form) 5.73; valence −3, 0, +3, or +5.
..... Click the link for more information. . Aš or Asch (both: äsh), city, W Czech Republic, in Bohemia, near the Bavarian border. It is a textile center and also manufactures lace, woolens, embroidery, and carpets. AS (1) See autonomous system.(2) See authentication server. (3) (Application System) An IBM mainframe 4GL that runs under MVS. It was originally designed for non-computer people and includes commands for planning, budgeting and graphics. However, a programmer can also produce complex applications. It also provides computer conferencing. as History 1. an ancient Roman unit of weight approximately equal to 1 pound troy (373 grams) 2. the standard monetary unit and copper coin of ancient Rome aS (electricity) As (meteorology) (chemistry) automatic sprinkler A sprinkler head having a nozzle which is normally closed, but opens when exposed to a predetermined quantity of heat—either by the melting of a fusible element or by the rupturing of a liquid-filled glass bulb.
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