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== Previous glossary entries ==
=== from [[ICRP Publication 131103]], 2015 2007 === A dimensionless factor by which the organ or tissue absorbed dose is multiplied to reflect the higher biological effectiveness of high-LET radiations compared with low-LET radiations. It is used to derive the equivalent dose from the absorbed dose averaged over a tissue or organ. === from [[ICRP Publication 116]], 2010 and [[ICRP Publication 120]], 2012 === A dimensionless factor by which the organ or tissue absorbed dose is multiplied to reflect the relative biological effectiveness of high-LET radiations compared with photon radiations. It is used to derive the equivalent dose from the mean absorbed dose in an organ or tissue. === from [[ICRP Publication 119]], 2012 === The radiation weighting factor is a dimensionless factor to derive the equivalent dose from the absorbed dose averaged over a tissue or organ, and is based on the quality of the radiation. === from [[ICRP Publication 123]], 2013 === A dimensionless factor by which the mean absorbed dose in an organ or tissue, D<sub>T</sub>, is multiplied to reflect the relative biological effectiveness of high-LET radiations compared with low-LET radiations. The product of w<sub>R</sub> and D<sub>T</sub> is the equivalent dose in the organ or tissue T.
