relativity theory
— Noun
– English
~ (physics) the theory that space and time are relative concepts rather than absolute concepts
reciprocal-inhibition therapy
— Noun
– English
~ a method of behavior therapy based on the inhibition of one response by the occurrence of another response that is mutually incompatible with it; a relaxation response might be conditioned to a stimulus that previously evoked anxiety
radiation therapy
— Noun
– English
~ (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
radium therapy
— Noun
– English
~ the use of radium in radiation therapy