Dictionary.com
Thesaurus.com

amputation

American  
[am-pyuh-tay-shuhn, am-pyoo-] / ˌæm pyəˈteɪ ʃən, ˌæm pyʊ- /

noun

  1. the act or instance of surgically removing a limb or part of a limb.

  2. the act of removing something by cutting, as if by surgery.

  3. a disability caused by the loss of a limb or part of a limb.

  4. Medicine/Medical. any absence or loss of a limb or part of a limb, whether congenitally or due to surgery or disease.