thy·​ro·​glob·​u·​lin ˌthī-rō-ˈglä-byə-lən How to pronounce thyroglobulin (audio)
: an iodine-containing protein of the thyroid gland that is the precursor of thyroxine and triiodothyronine

Examples of thyroglobulin in a Sentence

Recent Examples on the Web Finally, at Witebsky’s behest, Dr. Rose extracted small amounts of thyroglobulin from living rabbits, then devised innovative methods to inject the protein back into the same animals. Matt Schudel,, 10 Aug. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'thyroglobulin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


earlier thyreoglobulin, borrowed from German Thyreoglobulin, from thyreo-, combining form from New Latin thyreoidēs thyroid entry 2 + Globulin globulin

Note: The German term was introduced by the biochemist Adolph Oswald (1870-1956) in "Die Eiweisskörper der Schilddrüse," Hoppe-Seyler's Zeitschrift für physiologische Chemie, Band 27 (1899), p. 29. The initial element thyreo- was regularized to the more common English version thyro- (see note at that entry).

First Known Use

circa 1905, in the meaning defined above

Time Traveler
The first known use of thyroglobulin was circa 1905

Dictionary Entries Near thyroglobulin

Cite this Entry

“Thyroglobulin.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2023.

Medical Definition


thy·​ro·​glob·​u·​lin ˌthī-rō-ˈgläb-yə-lən How to pronounce thyroglobulin (audio)
: an iodine-containing protein of the thyroid gland that on proteolysis yields thyroxine and triiodothyronine

More from Merriam-Webster on thyroglobulin

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!