Etymograph

English

extrathyroid

Extrathyroid comes from Ancient Greek θῠρεοειδής ‘Shield-shaped’, from Proto-Indo-European *wéydos ‘seeing’, and ultimately from *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 2015extrathyroid

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 2015extrathyroid

Earliest quotation: 2015, Jian Zhu et al., Clinicopathological features of recurrent papillary thyroid : “In conclusion, initial surgery approach, tumor size, extrathyroid invasion,…”

A compound of extra- + thyroid

Proto-Indo-European *h₁éǵʰs ‘out’

Proto-Indo-European *h₁eǵʰsteros

Proto-Italic *eksteros

Latin exter ‘being on the outside’

Latin extrā ‘outside, except, beyond’

English extra-

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, provide, interview, 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, vide, twit, 104 more

through Proto-Indo-European *wéydos ‘seeing’

wise, 47 more

through Proto-Hellenic *wéidos

eidolon, steroidal, 47 more

through Ancient Greek εἶδος

idol, tabloid, steroid, idyll, colloid, hyoid, trapezoid, sigmoid, 49 more

through English thyroid

hypothyroidism, hyperthyroidism, thyroxine, parathyroid, thyroiditis, 13 more

Today it means

adj Outside of the thyroid gland

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

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