soft radiation
Also found in: Dictionary, Thesaurus, Medical.
soft radiation
[′sȯft ‚rād·ē′ā·shən] (physics)
Radiation whose particles or photons have a low energy, and, as a result, do not penetrate any type of material readily.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.