dilatate

Example:The doctor will give the patient a constricting agent to reduce the swelling.

Definition:to make smaller; to cause to gather inwardly; to tighten or narrow

Example:As the summer heat wore on, the ground contracted and exposed cracks.

Definition:to become smaller; shrink; retrench or become tighter

Example:The dog retracted its lips when the stranger approached.

Definition:to pull back or draw in; cause to contract or become smaller