Etymograph

English

synedrion

Synedrion comes from Ancient Greek συνέδριον ‘sitting together’, from ἕδρᾱ ‘seat’, and ultimately from Proto-Indo-European *sed- ‘to sit’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sed-1‘to sit’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*sedreh₂1reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*hédrā1reconstructed
  4. Ancient Greekc. 800–300 BCEἕδρᾱ2‘seat’
  5. Ancient Greekc. 800–300 BCEσῠ́νεδρος2‘sitting together’
  6. Ancient Greekc. 800–300 BCEσυνέδριον3sunédrion‘sitting together’
  7. Englishtodaysynedrion3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Ancient Greek ἕδρα
  2. 2 Wiktionary, Ancient Greek συνέδριον
  3. 3 Wiktionary, English synedrion

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sed-Wiktionary, Ancient Greek ἕδρα‘to sit’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*sedreh₂Wiktionary, Ancient Greek ἕδραreconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*hédrāWiktionary, Ancient Greek ἕδραreconstructed
  4. Ancient Greekc. 800–300 BCEἕδρᾱWiktionary, Ancient Greek συνέδριον‘seat’
  5. Ancient Greekc. 800–300 BCEσῠ́νεδροςWiktionary, Ancient Greek συνέδριον‘sitting together’
  6. Ancient Greekc. 800–300 BCEσυνέδριονWiktionary, English synedrionsunédrion‘sitting together’
  7. EnglishtodaysynedrionWiktionary, English synedrion

Linked words

through Proto-Indo-European *sed- ‘to sit’

set, president, size, sell, sit, sitting, seat, method, resident, session, settle, assess, possess, siege, nest, niche, saddle, exodus, reside, subsidy, residue, residual, sedan, nye, sediment, dissident, insidious, beset, prasad, cathode, soot, sedentary, setter, obsess, anode, sedative, sate, sedate, presidio, sessile, 92 more

through Proto-Hellenic *hédrā

chair, chaise, polyhedron, 12 more

Today it means

noun An assembly that holds formal sessions.

Sources

Sources: Wiktionary, “synedrion”; the older steps come from the Wiktionary entries for Ancient Greek ἕδρα, Ancient Greek συνέδριον. 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 *sed- / synedrion

Shirt and support for this word