acuity

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
  2. noun a quick and penetrating intelligence

Etymology

From Middle English acuite, acuyte, from Middle French acuité, from Medieval Latin acuitas, irreg., from Latin acuō (“sharpen”).

Synonyms

visual acuity, sharp-sightedness

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