mean life(redirected from Mean lifetime)
Also found in: Medical, Acronyms, Encyclopedia, Wikipedia.
Related to Mean lifetime: decay constant
(General Physics) physics the average time of existence of an unstable or reactive entity, such as a nucleus, elementary particle, charge carrier, etc; lifetime. It is equal to the half-life divided by 0.693 15. Symbol: τ
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014