noun kerma the quotient of the sum of the initial kinetic energies of all the charged particles liberated by indirectly ionizing radiation in a volume element of a material divided by the mass of the volume element. The SI unit is the gray 0
noun kerma (physics) the sum of the initial kinetic energies of all the charged particles liberated by uncharged ionizing radiation (neutrons and photons) in a sample of matter, divided by the mass of the sample. 0
