Excision

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Excision

Excision means "to remove by cutting".

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Excision means "to remove by cutting".

In surgery
Surgery

Surgery is a medical specialty that uses operative manual and instrumental techniques on a patient to investigate and/or treat a pathological condition such as disease or injury, to help improve bodily function or appearance, or sometimes for some other reason....
, an excision (also known as a resection) is the complete removal of an organ or a tumor
Tumor

A tumor or tumour is the name for a swelling or lesion formed by an abnormal growth of cells . Tumor is not synonymous with cancer. A tumor can be Benign neoplasm, Carcinoma in situ or malignant, whereas cancer is by definition malignant....
from a body, as opposed to a biopsy
Biopsy

A biopsy is a medical test involving the removal of Cell_s or Biological tissues for examination. It is the removal of tissue from a living subject to determine the presence or extent of a disease....
. 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
Australian migration zone

The Australian migration zone refers to the parts of Australia territory where a non citizen must hold a visa to legally enter and remain. It includes all states and mainland territories, plus some external territories, at the mean low water mark....
.
The Excision theorem
Excision theorem

In algebraic topology, a branch of mathematics, the Excision Theorem is a useful theorem about relative homology—given topological spaces X and subspaces A and U such that U is also a subspace of A, the theorem says that under certain circumstances, we can cut out U from both spaces such that the relative homolo...
is an important theorem in Algebraic topology
Algebraic topology

Algebraic topology is a branch of mathematics which uses tools from abstract algebra to study topological spaces. The basic goal is to find algebraic invariant that classification theorem topological spaces up to homeomorphism....
, a branch of Mathematics
Mathematics

Mathematics is the study of quantity, structure, space, change, and related topics of pattern and form. Mathematicians seek out patterns whether found in numbers, space, natural science, computers, imaginary abstractions, or elsewhere....
.
Grammatically, the noun excision derives from the verb excise; excise tax
Excise

Excise tax, sometimes called an excise Duty , is a type of tax. In the United States, the term "excise" means: any tax other than a property tax or Poll tax , or a tax that is simply called an excise in the language of the statute imposing that tax ....
is used to describe taxes charged on the purchase of goods or services.