- physics 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
C20: k (inetic) e (nergy) r (eleased per unit) ma (ss)
Examples from the Web for kerma
From Kosheh to Kerma, the first Dervish position, the distance by river is 127 miles.
The extension of the line from Kosheh to Kerma was therefore of vital importance.
It was resolved to attack the Dervish position at Kerma at dawn.
El Kheir was defeated, and fixed his advanced camp at Kerma.Ten Years' Captivity in the Mahdi's Camp 1882-1892
F. R. Wingate
From Kareima downstream the Nile is navigable to Kerma, just above the 3rd cataract.