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Definition of acuity noun from the Oxford Advanced Learner's Dictionary

acuity

noun
 
/əˈkjuːəti/
 
/əˈkjuːəti/
[uncountable] (formal)
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  1. the ability to think, see or hear clearly
    • a child’s visual acuity
    Word Originlate Middle English: from Old French acuité or medieval Latin acuitas, from Latin acuere ‘sharpen’ from acus ‘needle’.
See acuity in the Oxford Advanced American Dictionary
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