acuity meaning and definition

ACUITY noun

Definition of acuity (noun)

1. sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
   • synonyms: sharp-sightedness, visual acuity
2. a quick and penetrating intelligence
   • "he argued with great acuteness"; "I admired the keenness of his mind"
   • synonyms: acuteness, keenness, sharpness