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vigilance

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vig⋅i⋅lance

[vij-uh-luhns]
–noun
1. state or quality of being vigilant; watchfulness: Vigilance is required in the event of treachery.
2. Pathology. insomnia.

Origin:
1560–70; alter. ( -ance for -ancy ) of obs. vigilancy < L vigilantia; see vigilant, -ancy


1. alertness, attention, heedfulness, concern, care.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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vig·i·lance   (vĭj'ə-ləns)   
n.  Alert watchfulness.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: vig·i·lance
Pronunciation: 'vij-&-l&n(t)s
Function: noun
: the quality or state of being wakeful and alert : degree of wakefulness or responsiveness to stimuli —vig·i·lant /-l&nt/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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