20/20

 I. (noun) 

Sense 1

Meaning:

Normal visual acuity, as measured by the ability to read charts at a distance of 20 feet

Synonyms:

20/20; twenty-twenty

Classified under:

Nouns denoting cognitive processes and contents

Hypernyms ("20/20" is a kind of...):

acuity; sharp-sightedness; visual acuity (sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart))

Credits