Word.ws English Dictionary

blue moon

blue moon noun: the third full moon in a season that contains four rather than the usual three full moons.

blue moon: the third full moon in a season that contains four rather than the usual three full moons
Image: Codybird, CC BY-SA 3.0, via Wikimedia Commons

Noun

blue moon (countable and uncountable, plural blue moons)

  1. The third full moon in a season that contains four rather than the usual three full moons.
  2. The second of two full moons that occur in the same calendar month (a definition created by mistake in the 20th century).
  3. (countable, rare) The moon tinted towards blue as it appears in the sky, caused by dust or smoke in the atmosphere.
  4. (broadly, countable, idiomatic) A long time.
  5. (uncountable) A bright blue, sweet-flavored ice cream that is popular in the Midwestern U.S. and is a component of Superman ice cream.

blue moon meaning in Tamil and Vietnamese

blue moon in Tamil

பௌர்ணமி, நீல நிலா

blue moon in Vietnamese

full moon
trăng xanh
ice cream
trăng xanh

Forms of blue moon

pluralblue moons

Words formed from blue moon

Words that rhyme with blue moon

48 more rhymesFewer rhymes

Questions about blue moon

What does blue moon mean?
Blue moon means the third full moon in a season that contains four rather than the usual three full moons.
What is blue moon in Tamil?
Blue moon in Tamil is பௌர்ணமி, நீல நிலா. See Blue moon meaning in Tamil.
What part of speech is blue moon?
Blue moon is a noun.
What is the plural of blue moon?
The plural of blue moon is blue moons.

Words near blue moon in the dictionary

  1. blue Monday
  2. blue Mondays
  3. blue money
  4. blue monkey
  5. blue monkeys
  6. blue moon
  7. blue moons
  8. Blue Mountains
  9. Blue Mountains National Park
  10. blue movie
  11. blue movies

Source and license

Adapted from Wiktionary: blue moon (page history and authors); blue moon (Tamil Wiktionary) (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:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-au-blue moon.ogg.

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