Humerus/ˈhjuːmərəs/ Definition 1 of 1Pro Tip 1/3Anatomical Term Used in medical or scientific discussions about the body's structure. Medical students learn about the humerus in anatomy class. Pro Tip 2/3Injury Context Often mentioned in situations involving upper arm injuries or accidents. The X-ray revealed he had a broken humerus. Pro Tip 3/3Physical Descriptions Used to describe the specific part of the arm in detailed physical examinations. The swelling was located near the midsection of his humerus.