intrauterine contraceptive device
noun
: a device inserted into and left in the uterus to prevent conception
specifically
: a T-shaped device containing either progestin or copper that is inserted into and left in the uterus to prevent conception by blocking ovulation, thickening cervical mucus, or interfering with sperm motility
called also intrauterine device, IUCD, IUD
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Merriam-Webster unabridged
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