In surgery, an excision (also known as a resection) is the complete removal of an organ or a tumour from a body, as opposed to a biopsy. An "excisional biopsy" (sometimes called a "tumorectomy") is the removal of a tumor with a minimum of healthy tissue. It is therefore an excision rather than a biopsy.
It is a term used by the Australian government as part of its definition of the Australian migration zone.
Grammatically, the noun excision derives from the verb excise; excise tax is used to describe taxes charged on the purchase of goods or services.
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