decay constant

noun

Medical Definition of decay constant

: the constant ratio of the number of radioactive atoms disintegrating in any specified short unit interval of time to the total number of atoms of the same kind still intact at the beginning of that interval

called also disintegration constant

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“Decay constant.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/decay%20constant. Accessed 3 Dec. 2020.

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