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visitors’ book
visitorship
visna
visor
VISTA
vista
Vistula
visual
visual acuity
visual aid
visual arts
visual binary
visual evoked responses
visual field
visual-motor coordination
visual purple
visualize
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visual acuity
vi·su·al a·cu·i·ty


noun 
Definition:
 
acuteness of vision: acuteness of vision as determined by a comparison with the normal ability to identify letters at a distance of 6 m (20 ft)
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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