twenty-twenty

or 20/20

[ twen-tee-twen-tee, twuhn-tee-twuhn-tee ]

See synonyms for twenty-twenty on Thesaurus.com

adjective

Ophthalmology. having normal visual acuity.
keenly or acutely perceptive: an opinion based on twenty-twenty hindsight.

Origin of twenty-twenty

First recorded in 1875–80; extracted from Ophthalmic Manual (1875), by Sir Thomas Longmore, chief medical officer of the British armed forces

Words Nearby twenty-twenty

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use twenty-twenty in a sentence

"Nineteen—twenty—twenty-one," the people in the Garden of the Tuileries counted.
Harper's Round Table, September 10, 1895 | Various

British Dictionary definitions for twenty-twenty

twenty-twenty

adjective

med (of vision) being of normal acuity: usually written 20/20

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for twenty-twenty

twenty-twenty

Having normal visual acuity. A person with twenty-twenty vision can see type as small as one-third of an inch at a distance of twenty feet.

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