the horizon

Definition of the horizon

  1. :  the line where the earth or sea seems to meet the sky The sun rose slowly over/above the eastern horizon.

Word by Word Definitions

  1. :  the line where the earth seems to meet the sky :  the apparent junction of earth and sky

    :  the great circle on the celestial sphere formed by the intersection of the celestial sphere with a plane tangent to the earth's surface at an observer's position — see azimuth illustration

    :  range of perception or experience

Seen and Heard

What made you want to look up the horizon? Please tell us where you read or heard it (including the quote, if possible).


a rounded knoll or a ridge of ice

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