relative biological effectiveness

of radiation
The ratio of the appropriate value of the biological @[email protected] of the radiation in question to that of @[email protected] with an average @[email protected] of 100 ion pairs per micron of water, for the particular biological effect under consideration and for the condition under which the @[email protected] is received.
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1551 [Terms] [Paper]