Etymograph

English

thyroidectomy

Thyroidectomy comes from Ancient Greek ἐκτομή ‘a cutting out’, from ἐκτέμνω ‘to cut down trees, fell, cut to shape’, and ultimately from Proto-Indo-European *temh₁-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*temh₁-1‘to cut’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*tm̥-né-h₁-ti1reconstructed
  3. Ancient Greekc. 800–300 BCEτέμνω2témnō‘to cut’
  4. Ancient Greekc. 800–300 BCEἐκτέμνω2ektémnō‘to cut down trees, fell, cut to shape’
  5. Ancient Greekc. 800–300 BCEἐκτομή2ektomḗ‘a cutting out’
  6. Englishtodaythyroidectomy2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Ancient Greek τέμνω
  2. 2 Wiktionary, English thyroidectomy

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*temh₁-Wiktionary, Ancient Greek τέμνω‘to cut’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*tm̥-né-h₁-tiWiktionary, Ancient Greek τέμνωreconstructed
  3. Ancient Greekc. 800–300 BCEτέμνωWiktionary, English thyroidectomytémnō‘to cut’
  4. Ancient Greekc. 800–300 BCEἐκτέμνωWiktionary, English thyroidectomyektémnō‘to cut down trees, fell, cut to shape’
  5. Ancient Greekc. 800–300 BCEἐκτομήWiktionary, English thyroidectomyektomḗ‘a cutting out’
  6. EnglishtodaythyroidectomyWiktionary, English thyroidectomy

A compound of thyroid + -ectomy

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 *temh₁- ‘to cut’

contempt, templar, tempestuous, 34 more

through Ancient Greek τέμνω ‘to cut’

atom, epitome, tome, toma, dichotomous, 30 more

Today it means

noun The surgical removal of part or all of the thyroid gland.

Sources

Sources: Wiktionary, “thyroidectomy”; the older steps come from the Wiktionary entry for Ancient Greek τέμνω. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *temh₁- / thyroidectomy