There are several synonyms for the term "previous tubal ligation". Some of these include "tubal sterilization", "tubal occlusion", and "fallopian tube ligation". These terms all refer to a surgical procedure in which the fallopian tubes of a woman are blocked or cut to prevent pregnancy. The procedure is typically considered permanent, and is often performed as a form of birth control for women who do not wish to have any, or any more, children. While the terms "previous tubal ligation", "tubal sterilization", "tubal occlusion", and "fallopian tube ligation" all refer to the same basic procedure, their use can vary depending on the context in which they are used.