Earthquake alarm

Earthquake alarm
Earthquake Earth"quake`, n. A shaking, trembling, or concussion of the earth, due to subterranean causes, often accompanied by a rumbling noise. The wave of shock sometimes traverses half a hemisphere, destroying cities and many thousand lives; -- called also {earthdin}, {earthquave}, and {earthshock}. [1913 Webster]

{Earthquake alarm}, a bell signal constructed to operate on the theory that a few seconds before the occurrence of an earthquake the magnet temporarily loses its power. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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