rup?tur?ing. noun 1. the act of breaking or bursting: The flood led to the rupture of the dam. 2. the state of being broken or burst: a rupture in the earth's surface. 3. a breach of harmonious, friendly, or peaceful relations. 4. Pathology . hernia, especially abdominal hernia. verb (used with object) 5. to break or burst: He ruptured a blood vessel. 6. to cause a breach of: to rupture friendly relations. 7. Pathology . to affect with hernia.