Definition of forty number from the Oxford Advanced Learner's Dictionary

      

    forty

     
    BrE BrE//ˈfɔːti//
     
    ; NAmE NAmE//ˈfɔːrti//
     
     
    jump to other results
  1. 1  number 40
  2. 2noun the forties [plural] numbers, years or temperatures from 40 to 49
  3. Idioms between the ages of 40 and 49
See the Oxford Advanced American Dictionary entry: forty