1. relating to or involving social interaction between people of different sexes
Usage: often used in developmental psychology and education contexts

Examples

• The school promoted heterosocial activities to help students develop social skills across gender lines.
• Heterosocial friendships became more common as the teenagers matured.
• The camp organized heterosocial group projects to encourage collaboration.
• Developmental psychologists study heterosocial behavior in adolescents.
• The club created a heterosocial environment where members of all genders could participate equally.