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View synonyms for RU 486
RU 486
or RU-486
RU 486
/ är′yo̅o̅fôr′ā-tē-sĭks′ /
- An oral drug that terminates early pregnancy by interfering with the action of progesterone, thereby preventing the attachment of a fertilized ovum to the uterine wall.
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Word History and Origins
Origin of RU 4861
First recorded in 1980; designation given the compound by its French manufacturer, Roussel UCLAF, Paris
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