relative biological effectiveness
Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.
relative biological effectiveness[′rel·əd·iv ¦bī·ə¦läj·ə·kəl i′fek·tiv·nəs]
A factor used to compare the biological effectiveness of different types of ionizing radiation; it is the inverse ratio of the amount of absorbed radiation required to produce a given effect to a standard (or reference) radiation required to produce the same effect. Abbreviated RBE.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.