Etymograph

English

preclusion

Preclusion comes from Latin praeclusio, from praecludo ‘to close or block’, and ultimately from Proto-Indo-European *kleh₂w-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kleh₂w-1‘to close something’reconstructed
  2. Proto-Italicc. 1500–700 BCE*klaudō1‘to close’reconstructed
  3. Latinc. 75 BCE–200 CEclaudō1‘to shut up, close, lock’
  4. Latinc. 75 BCE–200 CEpraecludo2‘to close or block’
  5. Latinc. 75 BCE–200 CEpraeclusio2
  6. Englishtodaypreclusion2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin praecludo
  2. 2 Wiktionary, English preclusion

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kleh₂w-Wiktionary, Latin praecludo‘to close something’reconstructed
  2. Proto-Italicc. 1500–700 BCE*klaudōWiktionary, Latin praecludo‘to close’reconstructed
  3. Latinc. 75 BCE–200 CEclaudōWiktionary, Latin praecludo‘to shut up, close, lock’
  4. Latinc. 75 BCE–200 CEpraecludoWiktionary, English preclusion‘to close or block’
  5. Latinc. 75 BCE–200 CEpraeclusioWiktionary, English preclusion
  6. EnglishtodaypreclusionWiktionary, English preclusion

Linked words

through Proto-Indo-European *kleh₂w- ‘to close something’

include, cataract, conclave, subclavian, 27 more

through Proto-Italic *klaudō ‘to close’

closet, disclose, enclose, inclusiveness, 25 more

through Latin claudō ‘to shut up, close, lock’

close, exclusive, closure, clause, conclusion, exclude, conclude, inclusive, inclusion, cloister, sluice, claustrophobia, recluse, cloture, occlusion, 30 more

Today it means

noun The act of precluding.

Sources

Sources: Wiktionary, “preclusion”; the older steps come from the Wiktionary entry for Latin praecludo. 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 *kleh₂w- / preclusion

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