Meanings
Synonyms & antonyms
nounnormal visual acuity, as measured by the ability to read charts at a distance of 20 feet
Similar
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From a method of testing vision by reading charts at a distance of 20 feet.
Full word history & related roots →Cite this entry
APA
twenty-twenty. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/twenty-twenty
MLA
“twenty-twenty.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/twenty-twenty. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “twenty-twenty,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/twenty-twenty.
Source: twenty-twenty on Wiktionary, CC BY-SA 4.0.