Formally in Hebrew, it's a "BREET mee-LAH", often abbreviated as "BREET".
Surgery can extend, but the surgical procedure that does it is not called circumcision.
In Yiddish, circumcision is called "bris" (ברית).
A vasectomy, is internal cutting for birth control. Cutting the exterior (foreskin), is called circumcision.
A Jew that does circumcision is called a Mohell
The instrument used in a Jewish circumcision is a device called a Jewish Shield.
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The person is called a sandek.See also the Related Link.More about Jewish circumcision
Female genital mutilation.
A Jewish circumcision ceremony is called a 'brit milah'.
It is called khatna (circumcision)
circumcision = מילה (meelah) covenant of circumcision = ברית מילה (brit milah), commonly called a bris by American Jews.
Circumcision is when you remove skin from genitalia. On the men the foreskin and on the women parts of the vulva or all of it. Female circumcision isn't called circumcision anymore but female mutilation since that is what it is. It's more extensive then it is on men and more damaging. More here: http://en.wikipedia.org/wiki/Circumcision