mean life

noun

, Physics.

1. the average time that an unstable particle or nucleus survives before it decays.
2. decay time.

mean life

noun

1. 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 τ

Example Sentences

You are wasting precious moments that may mean life or death to the one we both love.

From Project Gutenberg

It was hard to foresee the critical stress that should mean life or death to the ship and its people.

From Project Gutenberg

The ingenious M. Muret, again, had found a Swiss parish in which the mean life was the highest and the fecundity smallest known.

From Project Gutenberg

I kind of feel the life the boys live around these forests is a pretty mean life.

From Project Gutenberg

It was one of those friendly things, between friends, which might easily mean life or death.

From Project Gutenberg