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adjective British English pronunciation: long /lɒŋ/ 
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adjectivelong
comparativelonger
superlativelongest
  1. 1
    lasting for a large amount of time

    It's a long time since I saw Rachel.

    There was a long pause before he spoke.

    Many people face a long wait for surgery.

    I haven't spoken to him for a long while.

    He has a long history of mental illness.

  2. 2
    measuring a large amount from one end to the other

    a woman with long blonde hair

    There was a long queue outside the bank.

    We walked into a long narrow hall.

    It's the longest tunnel in Europe.

    1. a.
      covering a large distance

      We went for a long walk.

      It's a long way to Tokyo from here.

  3. 3
    used for saying or asking how far it is from one end of something to the other
    10 metres/2 centimetres/7 inches etc long:

    The room was 3 metres long.

    how long...?:

    How long do you think the table is?

    1. a.
      used for saying or asking about the amount of time that something lasts
      2 hours/an hour etc long:

      The journey was about an hour long.

      how long...?:

      How long was the film?

  4. 5
    long dresses, trousers, sleeves etc cover your arms or legs

    a shirt with long sleeves

    She came down to dinner in a long skirt.

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