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systemic
systemic circulation
systemize
systems analysis
systems engineering
systole
syzygy
sz
Szczecin
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system software
sys·tem soft·ware


noun 
Definition:
 
computer operating system: the operating system and utility programs used to operate and maintain a computer system and provide resources for application programs such as word processors and spreadsheets
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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