Final answer:
Amputation is the removal of a body extremity by trauma or surgery. It is a surgical procedure that involves the removal of all or part of a limb.
Step-by-step explanation:
The removal of a body extremity by trauma or surgery is called amputation. Amputation can be necessary due to severe trauma, such as in the case of a crushed limb, or for medical reasons, such as to treat cancer or prevent the spread of infection. It is a surgical procedure that involves the removal of all or part of a limb.