Tweet. Share this. Radiotherapy or radiation therapy is the general term for the use of radiation in the treatment of disease. Radiotherapy uses ionizing radiation to kill harmful cells in the body. Ionizing radiation can come from many sources, such as x-rays, gamma rays, or proton beams.When used for cancer treatments, radiation kills cancerous cells and shrinks tumors.weet. Share this. Radiotherapy or radiation therapy is the general term for the use of radiation in the treatment of disease. Radiotherapy uses ionizing radiation to kill harmful cells in the body. Ionizing radiation can come from many sources, such as x-rays, gamma rays, or proton beams.
Definition of impediment. 1 : something that impedes; especially : an impairment (as a stutter or a lisp) that interferes with the proper articulation of speech.
Contemporary Examples. 1  The problem, of course, is that democracy can itself become an impediment to peace. 2  Our need for a national story, a one-size-fits-all number, is an impediment to dealing with very real issues that affect us. 3  Only to find that weather was an impediment to lots of folks.