appendectomy -
The surgical procedure for the removal of the vermiform appendix.
Wikipedia
An appendectomy (sometimes called appendisectomy or appendicectomy) is the surgical removal of the vermiform appendix. This procedure is normally performed as an emergency procedure, when the patient is suffering from acute appendicitis. In the absence of surgical facilities, intravenous antibiotics are used to delay or avoid the onset of sepsis; it is now recognized that many cases will resolve when treated non-operatively.
OmegaWiki Dictionary
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appendectomy The surgical removal of the vermiform appendix.