The definition of psychosocial is relating to the combination of psychological and social behavior.
An example of psychosocial is the nature of a study that examines the relationship between a person's fears and how he relates to others in a social setting.
of or pertaining to the psychological development of the individual in relation to his or her social environment
Involving aspects of social and psychological behavior: a child's psychosocial development.
psycho- +"Ž social