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WordReference Random House Unabridged Dictionary of American English © 2024ox•y•to•cin (ok′si tō′sən),USA pronunciation n. - Biochemistrya polypeptide hormone, produced by the posterior lobe of the pituitary gland, that stimulates contraction of the smooth muscle of the uterus.
- Drugs[Pharm.]a commercial form of this substance, obtained from beef and hog pituitary glands or esp. by synthesis, and used chiefly in obstetrics to induce labor and to control postnatal hemorrhage.
- oxytoc(ic) + -in2 1925–30
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