kerma

noun
ker·​ma | \ ˈkər-mə How to pronounce kerma (audio) \

Medical Definition of kerma

: the ratio of the sum of the initial kinetic energies of all charged particles liberated by uncharged ionizing particles (as neutrons) in an element of volume of irradiated matter to the mass of matter in the element of volume

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“Kerma.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/kerma. Accessed 20 Feb. 2020.

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