Etymograph

English

presidio

Presidio comes from Spanish presidio ‘garrison’, from Latin praesidium ‘defence, protection, guardianship’, 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*sed-éh₁-ye-ti1reconstructed
  3. Proto-Italicc. 1500–700 BCE*sedēō1‘to sit, to be sitting, to be seated’reconstructed
  4. Latinc. 75 BCE–200 CEsedeō2‘to sit, to be seated’
  5. Latinc. 75 BCE–200 CEpraesideō2‘to guard, watch, protect, defend’
  6. Latinc. 75 BCE–200 CEpraeses3‘guardian, defender’
  7. Latinc. 75 BCE–200 CEpraesidium4‘defence, protection, guardianship’
  8. Spanishc. 1500–presentpresidio4‘garrison’
  9. Englishearliest quotation 1948presidio4

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin sedeo
  2. 2 Wiktionary, Latin praeses
  3. 3 Wiktionary, Latin praesidium
  4. 4 Wiktionary, English presidio
  5. Earliest quotation in Wiktionary’s entry: 1948, Carey McWilliams, J. B. Lippincott Company: “While De Anza was exploring the Bay of San…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sed-Wiktionary, Latin sedeo‘to sit’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*sed-éh₁-ye-tiWiktionary, Latin sedeoreconstructed
  3. Proto-Italicc. 1500–700 BCE*sedēōWiktionary, Latin sedeo‘to sit, to be sitting, to be seated’reconstructed
  4. Latinc. 75 BCE–200 CEsedeōWiktionary, Latin praeses‘to sit, to be seated’
  5. Latinc. 75 BCE–200 CEpraesideōWiktionary, Latin praeses‘to guard, watch, protect, defend’
  6. Latinc. 75 BCE–200 CEpraesesWiktionary, Latin praesidium‘guardian, defender’
  7. Latinc. 75 BCE–200 CEpraesidiumWiktionary, English presidio‘defence, protection, guardianship’
  8. Spanishc. 1500–presentpresidioWiktionary, English presidio‘garrison’
  9. Englishearliest quotation 1948presidioWiktionary, English presidio. Earliest quotation in Wiktionary’s entry: 1948, Carey McWilliams, J. B. Lippincott Company: “While De Anza was exploring the Bay of San…”

Linked words

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

set, sell, seat, method, chair, sitting, sit, settle, niche, nest, possess, saddle, exodus, nye, subsidy, cathode, soot, setter, beset, anode, prasad, chaise, sate, ersatz, salo, polyhedron, nias, besiege, nidal, 83 more

through Proto-Italic *sedēō ‘to sit, to be sitting, to be seated’

possession, obsession, assessor, assize, 26 more

through Latin sedeō ‘to sit, to be seated’

size, session, assess, siege, resident, sedan, sediment, sedentary, sedative, reside, possessive, residual, residue, sedate, obsess, dissident, insidious, seance, sessile, 29 more

Today it means

noun A garrisoned place, especially one that is or was once under Spanish control.

Sources

Sources: Wiktionary, “presidio”; the older steps come from the Wiktionary entries for Latin sedeo, Latin praeses, Latin praesidium. 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- / presidio

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