[ trahy-ahy-oh-doh-thahy-ruh-neen, -ahy-od-oh- ]
/ ˌtraɪ aɪˌoʊ doʊˈθaɪ rəˌnin, -aɪˌɒd oʊ- /
Biochemistry. a thyroid hormone, C15H12I3NO4, similar to thyroxine but several times more potent.
Pharmacology. a preparation of this hormone, used in treating hypothyroidism. Abbreviation: T3
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Words nearby triiodothyronine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for triiodothyronine
/ (ˌtraɪaɪˌəʊdəʊˈθaɪrəˌniːn) /
an amino acid hormone that contains iodine and is secreted by the thyroid gland with thyroxine, to which it has a similar action. Formula: C 15 H 12 I 3 NO 4
Word Origin for triiodothyronine
C20: from tri- + iodo- + thyro- + -ine 2
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