n. the use of radioisotopes to study the kinetics of chemical reactions
The Century Dictionary and Cyclopedia
n. That part of chemistry which treats of radioactive bodies and of the phenomena produced by them.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the chemistry of radioactive substances
Word Usage
"Several excellent graduate students interested in radiochemistry joined my research group that summer, and were shortly joined by others and by a series of postdoctoral research associates, including many from Europe and Japan."