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sky - definition and synonyms


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noun [countable/uncountable] sky pronunciation in American English /skaɪ/
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  1. the space above the earth that you see when you look up into the air
    At noon the sun is directly above us in the sky.
    Air pollution is clearly visible in the skies over Los Angeles.
    a clear blue sky
    the night/summer/northern sky (=how the sky looks at a particular time, season, or place): The night sky was filled with stars.
    a patch/strip of sky (=a small area of the sky): a patch of blue sky among the clouds
    1. a.
      [usually plural] used for talking about the weather
      clear/cloudy skies: Tomorrow we expect clear skies in the morning, with rain in the afternoon.



a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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