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McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
HOS(1) (Higher Order Software) A design and documentation technique used to break down an information system into a set of functions that are mathematically correct and error free. It uses a rigid set of rules for the decomposition of the total system into its elementary components. The resulting specifications are complete enough to have machine language programs generated directly from them.
(2) (Health Outcomes Survey) See healthcare IT.
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