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Noun: twenty-twenty  'twen-tee'twen-tee
  1. Normal visual acuity, as measured by the ability to read charts at a distance of 20 feet
    - 20/20, 20-20 vision
Adjective: twenty-twenty  'twen-tee'twen-tee
  1. Having normal eyesight
    "twenty-twenty vision";
    - 20/20

Type of: acuity, sharp-sightedness, visual acuity

Encyclopedia: Twenty-twenty