SKIP TO CONTENT

thyroxine

Definitions of thyroxine
  1. noun
    hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells
    thyroxine is 65% iodine”
    synonyms: T, tetraiodothyronine, thyroxin
    see moresee less
    type of:
    thyroid hormone
    any of several closely related compounds that are produced by the thyroid gland and are active metabolically
Word Family
EDITOR’S CHOICE

Test prep from the experts

Boost your test score with programs developed by Vocabulary.com’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.

SAT/PSAT

$29.95
  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week

TOEFL

$29.95
  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week

ACT

$29.95
  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week