# calcitonin

> English word · Noun · IPA /ˌkæl.sɪˈtəʊ.nɪn/

## Definitions
1. A polypeptide hormone secreted by the thyroid gland that has the effect of lowering blood calcium.
2. A synthetic or recombinant form of calcitonin used to treat Paget disease of bone and postmenopausal osteoporosis.

## Etymology
From calci- + tonic + -in.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/calcitonin