Definition of Vaginal contraceptive sponge

Vaginal contraceptive sponge: A contraceptive device that is donut-shaped, made of plastic, contains a spermicide (nonoxynol-9) and is inserted into the vagina to cover the cervix. A loop is provided to ease removal. The sponge protects against contraception for up to 24 hours and for multiple acts of intercourse within this time. It is left in place for at least 6 hours after intercourse.