IPA: //ˌθaɪrəˈtroʊfɪn//
KK: /θaɪrəˈtroʊfɪn/
A hormone produced by the anterior pituitary gland that helps control the activity of the thyroid gland.
Thyrotrophin plays a crucial role in regulating metabolism by stimulating the thyroid gland.
Thyrotrophin is formed from "thyro-" (from Greek "thyreos", meaning shield, referring to the thyroid gland's shape) and "trophin" (from Greek "trophe", meaning nourishment or growth). The word refers to a hormone that stimulates the growth and activity of the thyroid gland.
Think of the 'thyroid' gland, which is shaped like a shield ('thyro-'), and 'trophin' relates to nourishment, so thyrotrophin is a substance that nourishes or stimulates the thyroid.
No commonly confused words.