This seismograh measures the motion of a quake.
quake definition by Webster's New World
- to tremble or shake, as the ground does in an earthquake
- to shudder or shiver, as from fear or cold
Origin: Middle English quaken ; from Old English cwacian
- a shaking or tremor
- an earthquake, moonquake, etc.
quake definition by American Heritage Dictionary
intransitive verb quaked quaked, quak·ing, quakes
- To shake or tremble, as from instability or shock.
- To shiver, as with cold or from strong emotion. See Synonyms at shake.
- An instance of quaking.
- An earthquake.
Origin: Middle English quaken, from Old English cwacian.
- quakˈy adjective