Meaning of IUD

WordNet Dictionary
	Definition:		[n]  contraceptive device consisting of a piece of bent plastic or metal that is inserted through the vagina into the uterus
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	Synonyms:		intrauterine device
	See Also:		birth control device, contraceptive, contraceptive device, loop, preventative, preventive, prophylactic device
Biology Dictionary
	Definition:		Intrauterine devices are small T-shaped birth control devices made of copper and plastic; some may contain progesterone. They are placed in the uterus to prevent pregnancy and work mainly by preventing the fertilized egg from implanting in the wall of the uterus.