Etymology
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thyroxine (n.)

active principle of the thyroid gland, 1915, from thyro-, combining form of thyroid, + oxy- (apparently a reference to the oxygen atom present in it, but OED has it as a shortening of oxy-indol) + chemical suffix -ine (2), denoting an amino acid.

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Definitions of thyroxine

thyroxine (n.)
hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells;
thyroxine is 65% iodine
Synonyms: thyroxin / tetraiodothyronine / t
From wordnet.princeton.edu

Dictionary entries near thyroxine

thy

thyme

thymine

thymus

thyroid

thyroxine

thyrsus

thyself

ti

Tia Maria

tiara