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twen·ty-twen·tyor 20/20 (twĕn′tē-twĕn′tē, twŭn′tē-twŭn′tē)
Having normal visual acuity.
[From a method of testing vision by reading charts at a distance of 20 feet.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||20/20 - normal visual acuity, as measured by the ability to read charts at a distance of 20 feet|
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