First Known Use: 1952
Dictionary
triiodothyronine
noun tri·io·do·thy·ro·nine \ˌtrī-ˌī-ə-dō-ˈthī-rə-ˌnēn\
Definition of TRIIODOTHYRONINE
: an iodine-containing hormone C15H12I3NO4 that is an amino acid derived from thyroxine
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Origin of TRIIODOTHYRONINE
tri- + iod- + thyronine an amino acid of which thyroxine is a derivative
Medical Dictionary
triiodothyronine
noun tri·io·do·thy·ro·nine \ˌtrī-ˌī-əd-ō-ˈthī-rə-ˌnēn\
Medical Definition of TRIIODOTHYRONINE
: a crystalline iodine-containing hormone C15H12I3NO4 that is an amino acid derived from thyroxine and is used especially in the form of its soluble sodium salt C15H11I3NNaO4 in the treatment of hypothyroidism and metabolic insufficiency—called also liothyronine, T3
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