Definition of dilemma noun from the Oxford Advanced American Dictionary

     

    dilemma

     noun
    noun
    NAmE//dɪˈlɛmə//
     
     
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  1. 1a situation that makes problems, often one in which you have to make a very difficult choice between things of equal importance synonym predicament
  2. 2 to face a dilemma to be in a dilemma
  3. Idioms
    on the horns of a dilemma
     
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    in a situation in which you have to make a choice between things that are equally unpleasant The medical profession's eagerness for scientific advance had impaled it on the horns of a dilemma, forcing an unnatural choice between science and morality.
See the Oxford Advanced Learner's Dictionary entry: dilemma