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Definition of fraction noun from the Oxford Advanced American Dictionary

     

    fraction

     noun
    noun
    NAmE//ˈfrækʃn//
     
     
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  1. 1a small part or amount of something Only a small fraction of a bank's total deposits will be withdrawn at any one time. She hesitated for the merest fraction of a second. He raised his voice a fraction If fraction is used with a plural noun, the verb is usually plural:Only a fraction of cars in the U.S. use leaded gasoline.If it is used with a singular noun that represents a group of people, the verb is usually singular:A tiny fraction of the population never votes.
  2. 2a division of a number, for example ⅝ see common fraction synonym rational number compare integer
  3. Language Bankproportiondescribing fractions and proportions
    • According to this pie chart, a third of students' leisure time is spent watching TV.
    • One in five hours is spent socializing.
    • Socializing accounts for/makes up/comprises about 20% of leisure time.
    • Students spend twice as much time playing computer games as playing sports.
    • Three times as many hours are spent playing computer games as reading.
    • The figure for playing computer games is three times higher than the figure for reading.
    • The largest proportion of time is spent playing computer games.
See fraction in the Oxford Advanced Learner's Dictionary