Etymology

dysthyroidism

D2Y4S1T1H4Y4R1O1I1D2I1S1M3

Today it means: An abnormal functioning of the thyroid gland, referring to either hyperthyroidism or hypothyroidism (thyroid hormone deficiency or excess). Full definition →

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

  1. Proto-Indo-European*dews-?
  2. Proto-Indo-European*dus-
  3. Proto-Hellenic*dus-
  4. Ancient Greekδυσ- (dus-)
  5. New Latindys-
  6. Englishdys-
  7. Proto-Indo-European*dʰwer-
  8. Proto-Hellenic*tʰurā
  9. Ancient Greekθῠ́ρᾱ (thŭ́rā)
  10. Ancient Greekθῠρεός (thŭreós)
  11. Proto-Indo-European*weyd-
  12. Proto-Indo-European*wéydos
  13. Proto-Hellenic*wéidos
  14. Ancient Greekεἶδος (eîdos)
  15. Ancient Greekθῠρεοειδής (thŭreoeidḗs)
  16. New Latinthyreoīdēs
  17. Englishthyroid
  18. English todaydysthyroidism

From dys- + thyroid + -ism.

Etymology from Wiktionary, CC BY-SA 4.0.