Mastectomy (from Greek μαστός “breast” and ἐκτομή ektomia “cutting out”) is the medical term for the surgical removal of one or both breasts, partially or completely.

A mastoidectomy is a procedure performed to remove the mastoid air cells.

Mastopexy (Greek μαστός mastos “breast” + -pēxiā “affix”) is the plastic surgery mammoplasty procedure for raising sagging breasts upon the chest of the woman; by changing and modifying the size, contour, and elevation of the breasts.

A meatotomy (/miːəˈtɒtəmɪ/) is a form of penile modification in which the underside of the glans is split.

A hymenotomy is a medical procedure involving the surgical removal or opening of the hymen.