˜yÐÄvlog

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View synonyms for

blue moon

[ bloo moon ]

noun

  1. a second full moon in a month, occurring every two to three years as a result of the discrepancy between a lunar year and a solar year.
  2. (formerly) the third full moon in a season with four full moons instead of the usual three.
  3. a long, indeterminate stretch of time, as between occurrences of a rare event or phenomenon.
  4. an uncommon phenomenon in which the moon appears to have a blue tinge because of the filtering effect of smoke or dust particles in the atmosphere.


idiom

  1. a very long period of time:

    Such a chance comes once in a blue moon.

blue moon

noun

  1. the second full moon occurring within a calendar month
  2. once in a blue moon informal.
    very rarely; almost never
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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˜yÐÄvlog History and Origins

Origin of blue moon1

First recorded in 1815–25
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Example Sentences

Examples have not been reviewed.

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

From

It is also a blue moon but those hoping to see a bluish shade to the satellite are out of luck.

From

Every once in a blue moon, our youngest daughter Amma has a Sunday soccer game; in that case, you’ll find me on the sidelines at her game.

From

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

From

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

From

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