- N-UNCOUNTAcuity is sharpness of vision or hearing, or quickness of thought. [FORMAL]
Caffeine gives a boost of energy and temporarily sharpens mental acuity.
English dictionary. 2008.
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Acuity — may refer to:*Visual acuity, the behavioral ability to resolve fine image details *Acuity Insurance, an insurance company with headquarters in Sheboygan, Wisconsin *Acuity Solutions, a manufacturing consulting company with headquarters in Tigard … Wikipedia
Acuity — A*cu i*ty, n. [LL. acuitas: cf. F. acuit[ e].] Sharpness or acuteness, as of a needle, wit, etc. [1913 Webster] … The Collaborative International Dictionary of English
acuity — index insight, perception, sagacity Burton s Legal Thesaurus. William C. Burton. 2006 … Law dictionary
acuity — (n.) early 15c., from M.Fr. acuité (16c.) or directly from M.L. acuitatem (nom. acuitas) sharpness, from L. acuere to sharpen, related to acus needle, acuere to sharpen, from PIE root *ak rise to a point, be sharp (see ACRID (Cf. a … Etymology dictionary
acuity — ► NOUN ▪ sharpness or keenness of thought, vision, or hearing. ORIGIN Latin acuitas, from acus needle … English terms dictionary
acuity — [ə kyo͞o′ə tē] n. [Fr acuité < ML acuitas < L acus, needle: see ACEROSE1] acuteness; keenness, as of thought or vision … English World dictionary
acuity — 1. Sharpness, clearness, distinctness. 2. Severity. [thr. Fr., fr. L. acuo, pp. acutus, sharpen] absolute intensity threshold a. the minimal light that can be seen. resolution a. detection of a target having two or more parts, often measured by… … Medical dictionary
acuity — /euh kyooh i tee/, n. sharpness; acuteness; keenness: acuity of vision; acuity of mind. [1375 1425; late ME acuite < OF < ML, LL acuitas, equiv. to L acu(ere) to sharpen or acu(tus) sharpened (see ACUTE) + itas ITY] * * * … Universalium
acuity — n. mental; visual acuity * * * [ə kjuːɪtɪ] visual acuity mental … Combinatory dictionary
acuity — a•cu•i•ty [[t]əˈkyu ɪ ti[/t]] n. sharpness; acuteness; keenness: visual acuity; acuity of mind[/ex] • Etymology: 1375–1425; < OF < ML, LL acuitās= L acu(ere) to sharpen or acū(tus) sharpened (see acute) + itās ity … From formal English to slang