moonquake

[ moon-kweyk ]
/ ˈmunˌkweɪk /

noun

a seismic vibration of the moon's surface.

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Origin of moonquake

First recorded in 1935–40; moon + (earth)quake
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for moonquake

moonquake
/ (ˈmuːnˌkweɪk) /

noun

a light tremor of the moon, detected on the moon's surface
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