IPA: /ˌkæl.ɪˈtoʊ.nɪn/
KK: /kælˈsɪtəˌnɪn/
A hormone made by the thyroid gland that helps to lower the levels of calcium and phosphate in the blood.
Calcitonin is important for regulating calcium levels in the body.
Calcitonin → It is formed from "calci-" (from Latin "calx", meaning lime or calcium) and "-tonin" (derived from the Greek "tonos", meaning tension or tone). The word refers to a hormone that helps regulate calcium levels in the body, thus influencing the tone of calcium metabolism.
Think of 'calcium' ('calci-') which is essential for bone health, and 'tonin' which relates to regulating tension or tone in the body. This helps you remember that calcitonin is a hormone that regulates calcium levels.
No commonly confused words.