Etymology

thyroxine

T1H4Y4R1O1X8I1N1E1

Today it means: A thyroid hormone, with the chemical formula C₁₅H₁₁I₄NO₄, that regulates cell metabolism and growth. Full definition →

English ox- ← New Latin thyreoīdēs ← Ancient Greek θῠρεοειδής (thŭreoeidḗs)
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The story

  1. Proto-Indo-European*dʰwer-
  2. Proto-Hellenic*tʰurā
  3. Ancient Greekθῠ́ρᾱ (thŭ́rā)
  4. Ancient Greekθῠρεός (thŭreós)
  5. Proto-Indo-European*weyd-
  6. Proto-Indo-European*wéydos
  7. Proto-Hellenic*wéidos
  8. Ancient Greekεἶδος (eîdos)
  9. Ancient Greekθῠρεοειδής (thŭreoeidḗs)
  10. New Latinthyreoīdēs
  11. Englishthyroid
  12. Englishthyr-
  13. Englishox-
  14. English todaythyroxine

From thyr- (“thyroid”) + ox- (“oxygen”) + -ine.

Etymology from Wiktionary, CC BY-SA 4.0.