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1. the process or act of pulling or drawing out.
2. the preparation of an extract.
breech extraction extraction of an infant from the uterus in cases of breech presentation.
flap extraction removal of a cataract by making a flap in the cornea.
menstrual extraction a form of induced abortion in which a flexible cannula is inserted through an undilated cervix for the purpose of removing the fertilized embryo and endometrium. The cannula is attached to a syringe, which is used to aspirate the uterine contents and induce the onset of the “missed period.” This technique is not always effective, and sometimes a second procedure is required. It should be done within two weeks of a missed menstrual period.
serial extraction the selective extraction of primary teeth during an extended period of time to allow autonomous adjustment.
tooth extraction forcible removal of a tooth; called also odontectomy.
vacuum extraction removal of the uterine contents by application of a vacuum, done either for delivery of a viable fetus or for an abortion.