acuity

Noun
Synonyms: visual acuitysharp-sightednessacutenesssharpnesskeenness

WordNet 3.0

Noun (2)

  1. sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)Synonyms: visual acuitysharp-sightedness
  2. a quick and penetrating intelligence“he argued with great acuteness”“I admired the keenness of his mind”Synonyms: acutenesssharpnesskeenness
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Webster's Dictionary (GCIDE)

Acuity \A*cu"i*ty\, n. [LL. acuitas: cf. F. acuit['e].] Sharpness or acuteness, as of a needle, wit, etc. [1913 Webster]
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