Between-Subjects Design refers to a research design in which different groups of participants are randomly assigned to an experimental condition (exposed to one or more experimental treatments) or to a control condition (not exposed to an experimental treatment ).
Other /More definition:
Between-subjects design refers to an experimental research strategy in which each research participant provides data for only one level of the independent variable or variables.
A research paradigm in which different experimental subjects participate in different experimental conditions.
an experimental design in which each subject is tested under only one level of each independent variable
List of books: Between-Subjects,Design