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Longman Dictionary of Contemporary English
acuity
noun
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
visual
▪ Contact lenses sometimes give better visual acuity in these cases and the field of vision is nearly always improved.
▪ Frequent measurements of visual fields and acuity are obtained to detect optic nerve damage.
▪ The simplified scale in Figure 1 gives an indication of the range of vision as described in terminology based on visual acuity.
▪ The amount of pigmentation tends to increase slightly with age up to adolescence and brings with it a gradual improvement in visual acuity.
▪ Such vision would be recorded as 6/60 and would indicate severely reduced visual acuity.
▪ In measuring visual acuity in this way, a figure which looks like a fraction is recorded.
▪ Here, visual acuity is not so sharp, nor is our ability to judge distances so good.
EXAMPLES FROM OTHER ENTRIES
▪ mental acuity
EXAMPLES FROM CORPUS
▪ Contact lenses sometimes give better visual acuity in these cases and the field of vision is nearly always improved.
▪ Frequent measurements of visual fields and acuity are obtained to detect optic nerve damage.
▪ It will be appreciated that the precise nature of the degree or defect in acuity or field of vision is highly individual.
▪ Jack was coming to respect my eye at least as much as he respected my legal acuity.
▪ Such vision would be recorded as 6/60 and would indicate severely reduced visual acuity.
▪ The amount of pigmentation tends to increase slightly with age up to adolescence and brings with it a gradual improvement in visual acuity.
▪ The simplified scale in Figure 1 gives an indication of the range of vision as described in terminology based on visual acuity.
▪ Visual acuity is often normal even when the field of vision is so poor that the child is registered as blind.
The Collaborative International Dictionary
Acuity

Acuity \A*cu"i*ty\, n. [LL. acuitas: cf. F. acuit['e].] Sharpness or acuteness, as of a needle, wit, etc.

Douglas Harper's Etymology Dictionary
acuity

early 15c., from Middle French acuité (16c.) or directly from Medieval Latin acuitatem (nominative acuitas) "sharpness," from Latin acuere "to sharpen," related to acus "needle," acuere "to sharpen," from PIE root *ak- "rise to a point, be sharp" (see acrid).

Wiktionary
acuity

n. sharpness or acuteness, as of a needle, wit, etc.

WordNet
acuity
  1. n. sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) [syn: visual acuity, sharp-sightedness]

  2. a quick and penetrating intelligence; "he argued with great acuteness"; "I admired the keenness of his mind" [syn: acuteness, sharpness, keenness]

Wikipedia
Acuity

Acuity may refer to:

  • Visual acuity, the behavioral ability to resolve fine image details
  • Tactile acuity, the ability to resolve fine spatial details of an object with the sense of touch.
  • Acuity Advisors Limited, a technology corporate finance company with headquarters in London, UK
  • Acuity Insurance, an insurance company with headquarters in Sheboygan, Wisconsin
  • Acuity Solutions, a manufacturing consulting company with headquarters in Tigard, Oregon
  • Acuity (Health Care), Level of Care (Full-Time / Quarter Time care per patient). To prioritize patient care based on the acuity of a patient’s presenting symptoms/conditions during triage.
  • , a British coaster

  • ACUITY, an acronym for "Acute Catheterization and Urgent Intervention Triage Strategy"

Usage examples of "acuity".

Viviana possessed a certain acuity of mind, then, despite her frail emotional state.

Only noblemen possess the finesse and acuity required to learn the skills of governing eotaurs and the fickle currents of the atmosphere.

I had adjusted them for maximum acuity at distances ranging from two inches to five feet.

I said, but with the acuity of any jungle beast, he sensed the weakening of his prey.

And even if the freak chance that had struck Wally with a severe loss of his mental acuity, were to hit him too, he wanted no anaesthesia, no blurring of the memory.

I believe you understand the skill and mental acuity it would take to make a discerning decision about such a discovery, since prior knowledge of ancient objects and religions may be too skewed to be of service regarding this matter.

If she could get Michael talking and keep him talking long enough to be sure of his mental acuity, she would feel more confident about leaving him alone for the night.

As for the rest, I was being invited to place my eyes against the goggles of a quite ordinary visual acuity tester.

Moving very quickly I went to the bench on which was mounted the acuity tester and started to comply.

Then I noticed the dust cover for the acuity tester lying on the bench.

In addition, a fledgling has to contend with the devastating effect of daylight, the ability to see, hear and smell things way beyond mortal capabilities, and an extraordinary mental acuity to mold mortal minds.

When we look directly at a faint object-a star, say-we are using the fovea, the part of the retina with the greatest acuity and the greatest density of cells called cones.

Repeated exposure of an animal to the same odorant, in small doses, leads to great enhancement of acuity, suggesting the possibility that new receptor sites are added to the cells.

His auditory processing was exceptionally weak, although examination by a pediatric audiologist found his hearing acuity to be within normal limits.

Or at least that was so before Maco, with almost preternatural acuity, figured out what he was thinking.