twenty–twenty

adjective twen·ty–twen·ty \-ˈtwen-tē, -ˈtwən-\

Definition of twenty–twenty

  1. 1 of the human eye :  meeting a standard of normal visual acuity <twenty–twenty vision>

  2. 2 :  marked by facilely accurate discernment, judgment, or assessment <hindsight is twenty–twenty>

Variants of twenty–twenty

or

20/20

\-ˈtwen-tē, -ˈtwən-\

Origin and Etymology of twenty–twenty

from the testing of vision by reading letters at a distance of 20 feet


First Known Use: 1875


TWENTY–TWENTY Defined for English Language Learners

twenty–twenty

adjective twen·ty–twen·ty \-ˈtwen-tē, -ˈtwən-\

Definition of twenty–twenty for English Language Learners

  • : having good vision and able to see without glasses


Medical Dictionary

twenty–twenty

adjective twen·ty–twen·ty

Medical Definition of twenty–twenty

  1. :  having the normal visual acuity of the human eye that according to one common scale can distinguish at a distance of 20 feet characters one-third inch in diameter <twenty–twenty vision>

Variants of twenty–twenty

or

20/20

\ˌtwent-ē-ˈtwent-ē\play


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