Search Result for "twenty-twenty": 
Wordnet 3.0

NOUN (1)

1. normal visual acuity, as measured by the ability to read charts at a distance of 20 feet;
[syn: twenty-twenty, 20/20]


WordNet (r) 3.0 (2006):

twenty-twenty n 1: normal visual acuity, as measured by the ability to read charts at a distance of 20 feet [syn: twenty-twenty, 20/20]