adhesion
ad·he·sion
/ædˈhiːʒən/ noun , pl -sions
1 [ noncount ] : the act of adhering; especially : the act of sticking or attaching to something
the adhesion of the coating
the adhesion of the mud to my shoes
— compare adherence
2 [ count ] medical : a condition in which body tissues that are supposed to be separate grow together because of swelling after surgery
postoperative adhesions