Definition of hundred number from the Oxford Advanced American Dictionary

     

    hundred

     number
    number
    NAmE//ˈhʌndrəd//
     
     
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  1. 1(plural verb)
  2. 2100 One hundred (of the children) have already been placed with foster families. There were just a hundred of them there. This vase is worth several hundred dollars. She must be over a hundred (= a hundred years old). Hundreds of thousands of people are at risk. a hundred-year lease You say a, one, two, several, etc. hundred without a final “s” on “hundred.”Hundreds (of…) can be used if there is no number or quantity before it. Always use a plural verb with hundred or hundreds, except when an amount of money is mentioned:Four hundred (people) are expected to attend.Two hundred (dollars) was withdrawn from the account.
  3. 3a hundred, hundreds (of…) (usually informal) a large amount hundreds of miles away for hundreds of years If I've said it once, I've said it a hundred times. I have a hundred and one things to do. (formal) Men died in the hundreds.
  4. 4the hundreds [plural] the numbers from 100 to 999 We're talking about a figure in the low hundreds.
  5. 5the… hundreds [plural] the years of a particular century the early nineteen hundreds (= written “early 1900s”)
  6. 6 one, two, three, etc. hundred hours used to express whole hours in the 24-hour system twelve hundred hours (= 12:00, noon)
  7. Idioms
    give a hundred (and ten) percent
     
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    to put as much effort into something as you can Every player gave a hundred percent tonight.
      a/one hundred percent
       
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    1. 1in every way synonym completely I'm not a hundred percent sure. My family supports me one hundred percent.
    2. 2 completely fit and healthy I still don't feel a hundred percent.
    ninety-nine times out of a hundred
     
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    almost always
See the Oxford Advanced Learner's Dictionary entry: hundred