Definition of visual acuity in English:

visual acuity

Syllabification: vis·u·al a·cu·i·ty

Entry from US English dictionary

noun

Sharpness of vision, measured by the ability to discern letters or numbers at a given distance according to a fixed standard.

Definition of visual acuity in:

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Pronunciation: ˈnɔɪs(ə)m
adjective
having an extremely offensive smell