Etymograph

English

actuation

Actuation comes from Latin āctuō ‘to actuate, activate, implement’, from agō ‘to act, to behave’, and ultimately from Proto-Indo-European *h₂eǵ-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eǵ-1reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂éǵeti1‘to be driving’reconstructed
  3. Proto-Italicc. 1500–700 BCE*agō1‘to drive’reconstructed
  4. Latinc. 75 BCE–200 CEagō1‘to act, to behave’
  5. Latinc. 75 BCE–200 CEāctus1
  6. Latinc. 75 BCE–200 CEāctuō1‘to actuate, activate, implement’
  7. Medieval Latinmodernāctuātus1
  8. English1500–presentactuate1
  9. Englishearliest quotation 1954actuation1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English actuation
  2. Earliest quotation in Wiktionary’s entry: 1954, Third Class Corridor Brake Coaches for British Railways: “All the outside passenger doors are fitted with drop…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eǵ-Wiktionary, English actuationreconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂éǵetiWiktionary, English actuation‘to be driving’reconstructed
  3. Proto-Italicc. 1500–700 BCE*agōWiktionary, English actuation‘to drive’reconstructed
  4. Latinc. 75 BCE–200 CEagōWiktionary, English actuation‘to act, to behave’
  5. Latinc. 75 BCE–200 CEāctusWiktionary, English actuation
  6. Latinc. 75 BCE–200 CEāctuōWiktionary, English actuation‘to actuate, activate, implement’
  7. Medieval LatinmodernāctuātusWiktionary, English actuation
  8. English1500–presentactuateWiktionary, English actuation
  9. Englishearliest quotation 1954actuationWiktionary, English actuation. Earliest quotation in Wiktionary’s entry: 1954, Third Class Corridor Brake Coaches for British Railways: “All the outside passenger doors are fitted with drop…”

A compound of actuate + -ion

Proto-Indo-European *h₂eǵ-

…

Latin agō ‘do, act’

Latin āctus

Medieval Latin āctuō ‘actuate, implement’

Medieval Latin āctuātus ‘actuated’

English actuate

Linked words

through Proto-Indo-European *h₂eǵ-

suggest, register, essay, gesture, acre, digest, congestion, agrarian, belligerent, progesterone, ingest, agitate, gestation, agger, samaj, axiomatic, gerund, gestion, 131 more

through Proto-Indo-European *h₂éǵeti ‘to be driving’

strategy, agony, antagonist, axiom, antagonism, agonist, reactionary, antagonize, stratagem, glucagon, agonize, 104 more

through Proto-Italic *agō ‘to drive’

reaction, actively, transaction, radioactive, inactive, unambiguous, reagent, retroactive, hyperactivity, ambiguously, 82 more

through Latin agō ‘to act, to behave’

agency, act, agent, activity, active, action, agenda, examine, examination, ambiguous, agile, ambiguity, agility, assay, activate, squat, enact, radium, cogent, agitation, exigent, inexact, redact, 99 more

through Latin āctus

actor, 9 more

Today it means

noun The act of putting into motion.

Sources

Sources: Wiktionary, “actuation”. 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 *h₂eǵ- / actuation

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