The term PART OF IUD can be solved by the 5-letter word INTRA. This word is derived from Latin and means 'WITHIN' or 'INSIDE'. It is commonly used in medical terminology to refer to something that is located INSIDE the body, such as an intrauterine device (IUD). An IUD is a small, T-shaped device that is inserted into the uterus to prevent pregnancy. The part of the IUD referred to by the term PART OF IUD is the intrauterine portion, which is the part of the device that is inserted into the uterus.