Definition: A graft is a piece of the human body transferred from one person to another, or one place on the body to another place on the same person. The graft material may be made up of tissues, skin or bone taken from the patient him or herself, another person, several different people, or cadavers. A graft can even be made of synthetic material. A graft is no different than a transplant, though the term transplant is generally used when surgeons take organs or other material from one body or cadaver and place them in another.
Examples: Skin grafts are used in people who have suffered severe burns and other injuries. Grafts of brain tissue are used in neurosurgery. Bone grafts are used in orthopedic surgery. Gum grafts are used in dental surgery. Heart bypass surgery uses a grafted vein or artery to "bypass" blocked coronary arteries.
Sources
ADAM. Skin Graft Series
ADAM. Bone Graft Series.
ADAM. Skin Graft
ADAM. Dacron graft.
ADAM. Coronary Artery Bypass Graft.
ADAM. Heart Bypass Surgery.