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kerma

noun
  1. 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
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Word Origin for kerma

C20: k (inetic) e (nergy) r (eleased per unit) ma (ss)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for kerma

Historical Examples of kerma

  • From Kosheh to Kerma, the first Dervish position, the distance by river is 127 miles.

    The River War

    Winston S. Churchill

  • The extension of the line from Kosheh to Kerma was therefore of vital importance.

    The River War

    Winston S. Churchill

  • It was resolved to attack the Dervish position at Kerma at dawn.

    The River War

    Winston S. Churchill

  • El Kheir was defeated, and fixed his advanced camp at Kerma.

  • From Kareima downstream the Nile is navigable to Kerma, just above the 3rd cataract.