acuity

1. 1.

   sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

   Synonymsvisual acuitysharp-sightedness

   Broadersight

   Narrowertwenty-twentyoxyopia
2. 2.

   a quick and penetrating intelligence

   “he argued with great acuteness”

   “I admired the keenness of his mind”

   Synonymsacutenesssharpnesskeenness

   Broaderintelligence

   Narrowersteel trap

Other forms of acuity

plural

acuities·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about acuity

What does acuity mean?

acuity means "sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in acuity?

acuity has 4 syllables: a-cu-i-ty. The stress falls on "cu". In IPA it is /əˈkjuəti/.

What is another word for acuity?

Close synonyms include visual acuity, sharp-sightedness, acuteness, sharpness, keenness. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is acuity a common word?

acuity is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.