Try Our Apps


The Best Internet Slang


[kal-si-toh-nin] /ˌkæl sɪˈtoʊ nɪn/
noun, Biochemistry.
a polypeptide hormone that participates in the regulation of calcium levels in vertebrates by inhibiting loss of calcium from bone to the blood.
Origin of calcitonin
First recorded in 1960-65; calci- + tone + -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
British Dictionary definitions for calcitonin


a hormone secreted by the thyroid that inhibits the release of calcium from the skeleton and prevents a build-up of calcium in the blood Also called thyrocalcitonin Compare parathyroid hormone
Word Origin
C20: from calci- + ton(ic) + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
calcitonin in Medicine

calcitonin cal·ci·to·nin (kāl'sĭ-tō'nĭn)
A peptide hormone, produced by the thyroid gland in humans, that acts to lower plasma calcium and phosphate levels without augmenting calcium accretion. Also called thyrocalcitonin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
calcitonin in Science
A peptide hormone secreted by the thyroid gland that stimulates bone formation and lowers blood calcium and phosphate levels.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for calcitonin

Few English speakers likely know this word

Word Value for calcitonin

Scrabble Words With Friends

Nearby words for calcitonin