acuity

The definition of acuity is seeing or understanding things clearly.

(noun)

20/20 vision is an example of normal visual acuity.

See acuity in Webster's New World College Dictionary

noun

acuteness; keenness, as of thought or vision

Origin: Fr acuité < ML acuitas < L acus, needle: see acerose

See acuity in American Heritage Dictionary 4

noun

Acuteness of vision or perception; keenness.

Origin:

Origin: Middle English acuite

Origin: , from Old French

Origin: , ultimately from Latin acūtus, sharp; see acute

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