Electromagnetic radiation with
wavelengths of 1
nanometer or shorter. These are highly energized, deeply penetrating
photons which can be emitted from an
atomic nucleus during nuclear
fission (the splitting of an
atom) and during regular
atomic decay (
radioactivity).
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.