triiodothyronine

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tri·i·o·do·thy·ro·nine

 (trī′ī-ō′dō-thī′rə-nēn′, -ī-ŏd′ō-)
n. Abbr. T3
An iodine-containing hormone, C15H12I3NO4, produced by the thyroid gland and similar to but more potent than thyroxine. A synthetic form (liothyronine) is used in the treatment of hypothyroidism.

[tri- + iodo- + thyronine, an amino acid (thyr(o)- + -on(e) + -ine).]

triiodothyronine

(ˌtraɪaɪˌəʊdəʊˈθaɪrəˌniːn)
n
(Biochemistry) 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
[C20: from tri- + iodo- + thyro- + -ine2]

tri•i•o•do•thy•ro•nine

(ˌtraɪ aɪˌoʊ doʊˈθaɪ rəˌnin, -aɪˌɒd oʊ-)

n.
a thyroid hormone, C15H12I3NO4, similar to thyroxine but more potent: preparations of it used in treating hypothyroidism.
[1950–55; tri- + iod(ine) + -o- + thyronine (perhaps derivative, with -one, of thyroxine)]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.triiodothyronine - thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer
thyroid hormone - any of several closely related compounds that are produced by the thyroid gland and are active metabolically