Dictionary

1. (

• acuity ,
• visual_acuity ,
• sharp-sightedness

) sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) ;

2. (

• acuteness ,
• acuity ,
• sharpness ,
• keenness

) a quick and penetrating intelligence; "he argued with great acuteness"; "I admired the keenness of his mind" ;