intrauterine device
Also written as: IUD
Long-acting reversible contraceptive inserted into the uterus to prevent pregnancy.
Full Definition
An intrauterine device (IUD) is a small, T-shaped contraceptive device inserted into the uterus to provide long-term pregnancy prevention. Two main types exist: copper IUDs (which release copper ions toxic to sperm) and hormonal IUDs (which release progestogen). IUDs can remain effective for 3-10 years depending on the type and provide over 99% contraceptive efficacy. Insertion requires a brief medical procedure, and the device can be removed at any time if pregnancy is desired. Common side effects include changes in menstrual bleeding patterns, and rare complications include perforation or expulsion.
Usage
Usage note: Commonly abbreviated as IUD; colloquially called 'the coil' in UK.
In Context
- "The copper intrauterine device was inserted for long-term contraception." — Family planning consultation
- "IUD removal was scheduled due to persistent pelvic pain." — Gynaecology clinic letter