单词	calcitonin
释义	calcitonin noun cal·​ci·​to·​nin ˌkal-sə-ˈtō-nən  1 : a polypeptide hormone especially from the thyroid gland that lowers the level of calcium in the blood plasma called also thyrocalcitonin 2 : a synthetic or recombinant form of calcitonin used to treat Paget's disease of bone and postmenopausal osteoporosis Calcitonin administered by means of a nasal spray is an antiresorptive agent that has limited efficacy in reducing the risk of vertebral fractures and lacks efficacy in preventing hip fracture. Murray J. Favus Word History Etymology calci- + -tonin (as in serotonin) First Known Use 1961, in the meaning defined at sense 1 Medical Definition calcitonin noun cal·​ci·​to·​nin ˌkal-sə-ˈtō-nən  1 : a polypeptide hormone especially from the thyroid gland that tends to lower the level of calcium in the blood plasma called also thyrocalcitonin 2 : a synthetic or recombinant form of calcitonin used to treat Paget's disease of bone and postmenopausal osteoporosis Calcitonin administered by means of a nasal spray is an antiresorptive agent that has limited efficacy in reducing the risk of vertebral fractures and lacks efficacy in preventing hip fracture. Murray J. Favus, The New England Journal of Medicine
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