Abdomen/ˈæbdəmən/ Definition 1 of 2Pro Tip 1/3Medical Context Often used in healthcare to describe pain, injury, or surgery location. The patient reported severe pain in the lower abdomen. Pro Tip 2/3Physiology Relevance Reference to core strength or exercises focusing on the abdominal muscles. Crunches are effective for strengthening the abdomen. Pro Tip 3/3Pregnancy Reference Common term to describe the area where a baby develops during pregnancy. Her abdomen grew larger as the pregnancy progressed.