Definition of horizon noun from the Oxford Advanced American Dictionary

     

    horizon

     noun
    noun
    NAmE//həˈraɪzn//
     
     
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  1. 1the horizon [singular] the furthest that you can see, where the sky seems to meet the land or the ocean The sun sank below the horizon. A ship appeared on the horizon.
  2. 2[countable, usually plural] the limit of your desires, knowledge, or interests She wanted to travel to broaden her horizons. The company needs new horizons now.
  3. Idioms
    on the horizon
     
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    likely to happen soon There's trouble looming on the horizon.