Definition of acuity
: keenness of perception hearing acuity mental acuity
Examples of acuity in a Sentence
a worrisome deterioration in the acuity of his hearing over the years
Recent Examples of acuity from the Web
Moonlight even sharpens the visual acuity of horseshoe crabs, which come ashore on certain nights to mate.
Mental acuity, reduced risk factors for Alzheimer's, improved glucose, cholesterol, blood pressure, and reduction in inflammation are all among the reasons to embark on this challenge.
But thanks to mental acuity tests, brain scans and patient histories, that’s no longer the case.
In truth, though, the Cavaliers nearly matched the Warriors in passing acuity this year — players on both teams touch the ball the shortest possible time before passing it on.
With a visual acuity allowing jumping spiders to resolve objects 0.07 degrees apart, the full moon—which covers a whopping 0.5 degrees on the sky—would be easy to spot, if the spiders looked up at night.
Gary Alexander, a Music Theater Works veteran, negotiated the demanding dual role with a verbal, vocal and dramatic acuity that kept the pace brisk despite the show's tendency to lose its dramatic compass.
Leon’s psychological acuity, sly wit, and artistic restraint both deepen and darken a novel that is, like all enduring crime fiction, a study of character as much as crime.
That makes at least seven members of a roster of roughly 50 men who have experienced loss of acuity.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acuity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Do you have acuity or sensitivity?
Acuity is nearly synonymous with at least one sense of sensitivity, yet, as is so often the case with closely-related words, there are subtle differences worth observing before you substitute one of these words for the other. 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”). Sensitivity has a broader range of meanings than acuity does, including “the capacity of being easily hurt.” It may be used of inanimate objects such as radios (“the sensitivity of the instruments was carefully calibrated”), a context in which acuity is unusual.
ACUITY Defined for English Language Learners
Definition of acuity for English Language Learners
: the ability to see, hear, or understand something easily
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