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triiodothyronine

[trahy-ahy-oh-doh-thahy-ruh-neen, -ahy-od-oh-] /ˌtraɪ aɪˌoʊ doʊˈθaɪ rəˌnin, -aɪˌɒd oʊ-/
noun
1.
Biochemistry. a thyroid hormone, C 15 H 12 I 3 NO 4 , similar to thyroxine but several times more potent.
2.
Pharmacology. a preparation of this hormone, used in treating hypothyroidism. 3.
Abbreviation: T.
Origin
1950-1955
1950-55; tri- + iodo- + thyronine (perhaps derivative, with -one, of thyroxine)
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for triiodothyronine

triiodothyronine

/ˌtraɪaɪˌəʊdəʊˈθaɪrəˌniːn/
noun
1.
an amino acid hormone that contains iodine and is secreted by the thyroid gland with thyroxine, to which it has a similar action. Formula: C15H12I3NO4
Word Origin
C20: from tri- + iodo- + thyro- + -ine2
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
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