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relaxation time

noun, Physics.
the time that it takes for an exponentially decaying quantity, as radioactive particles or transient electrical currents, to decrease to 36.8 percent of its initial value.
Origin of relaxation time
1970-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for relaxation time
  • When you want to get away from the park activities, the hotel offers ample relaxation time at the outdoor atrium pool.

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