Acuity does refer to a form of sensitivity, but it is most often applied to the perceptual senses (as in “visual acuity” or “auditory acuity”). It is also frequently used in reference to the intellect (as in “mental …

ACUITY definition: sharpness; acuteness; keenness. See examples of acuity used in a sentence.

ACUITY meaning: 1. the ability to hear, see, or think accurately and clearly: 2. the ability to hear, see, or…. Learn more.

Definition of acuity noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

a•cu•i•ty (əˈkyu ɪ ti) n. sharpness; acuteness; keenness: visual acuity; acuity of mind.

Jan 14, 2026 · Noun acuity (plural acuities) Sharpness or acuteness, as of a needle, wit, etc. (figurative) The ability to think, see , or hear clearly. The old woman with dementia lost her mental acuity.

Overall, "acuity" emphasizes the level of precision and keenness in a person's abilities to observe, understand, and interpret the world around them, whether in a sensory or cognitive sense.

acuity, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Definitions of acuity noun sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) synonyms: sharp-sightedness, visual acuity

Acuity definition: Acuteness of vision or perception; keenness.