IUD

n. contraceptive device which is placed inside the uterus to prevent conception

An intra-uterine device (intra meaning within, and uterine meaning of the uterus) is a birth control device also known as an IUD or a coil (this colloquialism is based on the coil-shaped design of early IUDs). It is a device placed in the uterus and is the world's most widely used method of reversible birth control, currently used by nearly 160 million women (just over two-thirds of whom are in China where it is the most widely used birth control method, surpassing sterilization). The device has to be fitted inside or removed from the uterus by a doctor or qualified medical practitioner. It remains in place the entire time pregnancy is not desired. Depending on the type, a single IUD is approved for 5 to 10 years use (the copper T 380A is effective for at least 12 years).
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An IUD is an intrauterine device made of plastic and/or copper that is inserted into the womb by way of the vaginal canal. [more]IUD - Community and Resources

Noun
1. contraceptive device consisting of a piece of bent plastic or metal that is inserted through the vagina into the uterus
(synonym) intrauterine device
(hypernym) contraceptive, preventive, preventative, contraceptive device, prophylactic device, birth control device
(hyponym) loop

Intrauterine contraceptive device.