Acuity
WordNet

noun


(1)   A quick and penetrating intelligence
"He argued with great acuteness"
"I admired the keenness of his mind"
(2)   Sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
WiktionaryText

Noun


  1. Sharpness or acuteness, as of a needle, wit, etc.
 
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