Word Origin See more synonyms for acuity on Thesaurus.com sharpness; acuteness; keenness: acuity of vision; acuity of mind. Origin of acuity 1375–1425; late Middle English acuite
Medieval Latin, Late Latin acuitās,
) to sharpen or
) sharpened (see
-itās -ity Related forms hy·per·a·cu·i·ty, noun non·a·cu·i·ty, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for acuities keenness or acuteness, esp in vision or thought the capacity of the eye to see fine detail, measured by determining the finest detail that can just be detected Word Origin
C15: from Old French, from Latin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for acuities acuity n.
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).
Online Etymology Dictionary, © 2010 Douglas Harper
acuity (ə-kyōō ′ĭ-tē) Sharpness, clearness, and distinctness of perception or vision.
The American Heritage® Stedman's Medical Dictionary
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