twenty-twenty

or 20-20

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

adjective

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

Nearby words

  1. twenty-sixth amendment,
  2. twenty-third,
  3. twenty-third amendment,
  4. twenty-third psalm,
  5. twenty-three,
  6. twenty-twenty hindsight,
  7. twenty-two,
  8. twenty20,
  9. twentyfold,
  10. twentymo

Origin of twenty-twenty

First recorded in 1935–40

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


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

Science definitions for twenty-twenty

twenty-twenty

20/20 (twĕn′tē-twĕn)

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.