Etymograph

English

coadunate

Coadunate comes from Latin coadūnātus ‘united’, from ūnus ‘one, single’, and perhaps ultimately from Proto-Indo-European *ís ‘this, he’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*ís1‘this, he’uncertain
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₁óynos1‘one’reconstructed
  3. Proto-Italicc. 1500–700 BCE*oinos1‘one’reconstructed
  4. Old Latinc. 700–75 BCEoinos1
  5. Latinc. 75 BCE–200 CEūnus1‘one, single’
  6. Latinc. 75 BCE–200 CEadūnō1‘to unite, make one’
  7. Latinc. 75 BCE–200 CEcoadūnō2‘to unite, collect or join into one’
  8. Latinc. 75 BCE–200 CEcoadūnātus2‘united’perfect passive participle of coadūnō
  9. Englishtodaycoadunate2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin coaduno
  2. 2 Wiktionary, English coadunate

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*ísWiktionary, Latin coaduno‘this, he’uncertain
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₁óynosWiktionary, Latin coaduno‘one’reconstructed
  3. Proto-Italicc. 1500–700 BCE*oinosWiktionary, Latin coaduno‘one’reconstructed
  4. Old Latinc. 700–75 BCEoinosWiktionary, Latin coaduno
  5. Latinc. 75 BCE–200 CEūnusWiktionary, Latin coaduno‘one, single’
  6. Latinc. 75 BCE–200 CEadūnōWiktionary, Latin coaduno‘to unite, make one’
  7. Latinc. 75 BCE–200 CEcoadūnōWiktionary, English coadunate‘to unite, collect or join into one’
  8. Latinc. 75 BCE–200 CEcoadūnātusWiktionary, English coadunate‘united’perfect passive participle of coadūnō
  9. EnglishtodaycoadunateWiktionary, English coadunate

first attested The verb is first attested in 1607, the adjective in 1839; borrowed from Latin coadūnātus, perfect passive participle of coadūnō (“to unite, collect or join into one”), see -ate (adjective-forming suffix) and -ate (verb-forming suffix) (as stated in Wiktionary’s etymology)

Linked words

through Proto-Indo-European *ís ‘this, he’

id, yonder, yon, 13 more

through Proto-Indo-European *h₁óynos ‘one’

an, one, no, only, any, none, 19 more

through Proto-Italic *oinos ‘one’

null, 17 more

through Old Latin oinos

universally, 13 more

through Latin ūnus ‘one, single’

union, unique, universal, unite, uno, triune, 14 more

Today it means

adj Closely joined (by growing together).

Sources

Sources: Wiktionary, “coadunate”; the older steps come from the Wiktionary entry for Latin coaduno. 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 *ís / coadunate

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