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Definitions

blue moon

[bloo moon] / ˈblu ˈmun /
NOUN
long period of time
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Once in a blue moon, a person is willing to do the hard internal work that leads to real, sustainable change.

From Salon • Mar. 21, 2025

The full moon Aug. 19 will be both a supermoon and a blue moon.

From Los Angeles Times • Sep. 17, 2024

It’s considered both a supermoon and a blue moon because of its proximity to earth and its timing during the season.

From Los Angeles Times • Aug. 19, 2024

Monday's full supermoon - also a blue moon - turned red in a dramatic way on Sunday night.

From BBC • Aug. 19, 2024

Once in a blue moon, I’ve seen my mother try something similar, but not often.

From "Catching Fire" by Suzanne Collins




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