Word.ws English Dictionary

blue hour

UK/ˈbluː aʊə/US/ˈblu(ː)aʊɚ/

blue hour noun: the period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.

blue hour: the period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a...
Image: Ansgar Koreng, CC BY-SA 4.0, via Wikimedia Commons

Noun

blue hour (plural blue hours)

  1. The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.
    Synonyms:
    crepuscule, gloaming

Synonyms of blue hour

Forms of blue hour

pluralblue hours

Origin of blue hour

Calque of French heure bleue.

Words that rhyme with blue hour

4 more rhymesFewer rhymes

Questions about blue hour

What does blue hour mean?
Blue hour means the period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.
What part of speech is blue hour?
Blue hour is a noun.
How do you pronounce blue hour?
Blue hour is pronounced /ˈbluː aʊə/ (UK).
What is the plural of blue hour?
The plural of blue hour is blue hours.

Words near blue hour in the dictionary

  1. Blue Hill Falls
  2. blue hole
  3. blue holes
  4. blue hook star
  5. blue hook stars
  6. blue hour
  7. blue hours
  8. Blue House
  9. blue hydrogen
  10. blue ice
  11. blue iceberg

Source and license

Adapted from Wiktionary: blue hour (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “blue hour.” Word.ws, https://word.ws/blue_hour. Based on Wiktionary, CC BY-SA 4.0.