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blue hour.

Noun
SettingLiterary
MEANING

A phase of twilight when the Sun is below the horizon and diffuse sky light appears predominantly blue.

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Words that belong together

  • during the blue hour
  • blue-hour light
  • the blue hour before dawn

On the page

During the blue hour, the tower windows held the last cool light.

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Word forms
Base
blue hour

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Usage notes

Blue hour is a colloquial lighting term, not a precisely fixed astronomical interval; its timing varies with location and conditions.

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