Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A quake or series of vibrations on the moon similar to an earthquake but usually of very low magnitude.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A seismic event occurring on the moon; the lunar equivalent of an earthquake.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Blend of moon and earthquake

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