A cassette (or other form of recording) intended to aid and promote relaxation, by means of spoken instruction in various techniques or exercises, calming music or sound effects, or a combination of these.
Origin
1960s.
Definition of relaxation tape in US English:
relaxation tape
noun
A cassette (or other form of recording) intended to aid and promote relaxation, by means of spoken instruction in various techniques or exercises, calming music or sound effects, or a combination of these.