Etymograph

English

thyroidal

Thyroidal comes from New Latin thyreoīdēs, from Ancient Greek θῠρεοειδής ‘Shield-shaped’, and ultimately from Proto-Indo-European *weyd- ‘to see’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*weyd-‘to see’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*wéydos‘seeing’reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*wéidosreconstructed
  4. Ancient Greekc. 800–300 BCEεἶδοςeîdos
  5. Ancient Greek, derivedc. 800–300 BCEθῠρεοειδήςthŭreoeidḗs‘Shield-shaped’
  6. New Latinmodernthyreoīdēs
  7. English1500–presentthyroid
  8. Englishearliest quotation 2016thyroidal

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*weyd-‘to see’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*wéydos‘seeing’reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*wéidosreconstructed
  4. Ancient Greekc. 800–300 BCEεἶδοςeîdos
  5. Ancient Greek, derivedc. 800–300 BCEθῠρεοειδήςthŭreoeidḗs‘Shield-shaped’
  6. New Latinmodernthyreoīdēs
  7. English1500–presentthyroid
  8. Englishearliest quotation 2016thyroidal

Earliest quotation: 2016: “The organification of iodide in the thyroid gland was…”

A compound of thyroid + -al

Proto-Indo-European *dʰwer- ‘door’

…

Ancient Greek θῠ́ρᾱ ‘door’

Ancient Greek θῠρεός ‘an oblong shield’

Ancient Greek θῠρεοειδής ‘shield-shaped’

New Latin thyreoīdēs ‘Shaped like a shield’

English thyroid

Linked words

through Proto-Indo-European *weyd- ‘to see’

story, guy, video, idea, review, visit, evidence, advice, interview, provide, vision, guide, witness, historic, wisdom, visa, advise, invisible, wit, wizard, historian, evident, visibility, vista, wisely, witty, revise, guise, prudent, envious, jurisprudence, unwise, prudence, revue, avis, improvise, purview, druid, twit, vide, 105 more

through Proto-Indo-European *wéydos ‘seeing’

wise, 48 more

through Proto-Hellenic *wéidos

eidolon, steroidal, 48 more

through Ancient Greek εἶδος

idol, tabloid, steroid, idyll, trapezoid, colloid, sigmoid, hyoid, 50 more

through English thyroid

hypothyroidism, hyperthyroidism, parathyroid, thyroxine, 14 more

Today it means

adj Of, pertaining to, or affecting the thyroid.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *weyd- / thyroidal