Etymograph

English

inoculation

Inoculation comes from Latin inoculātio ‘inoculation, ingrafting’, from oculus ‘eye’, and ultimately from Proto-Italic *okʷ(e)los.

  1. Proto-Italicc. 1500–700 BCE*okʷ(e)los1reconstructed
  2. Latinc. 75 BCE–200 CEoculus2‘eye’
  3. Latinc. 75 BCE–200 CEinoculō3‘to ingraft an eye or bud of one tree into another, inoculate, graft by budding, implant’
  4. Latinc. 75 BCE–200 CEinoculātio4‘inoculation, ingrafting’
  5. Englishearliest quotation 1837inoculation4

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin oculus
  2. 2 Wiktionary, Latin inoculo
  3. 3 Wiktionary, Latin inoculatio
  4. 4 Wiktionary, English inoculation
  5. Earliest quotation in Wiktionary’s entry: 1837, Letitia Elizabeth Landon, The End: “We owe, also, to Lady Mary the introduction of…”.

Earlier history uncertain. See Wiktionary.

Lineage

  1. Proto-Italicc. 1500–700 BCE*okʷ(e)losWiktionary, Latin oculusreconstructed
  2. Latinc. 75 BCE–200 CEoculusWiktionary, Latin inoculo‘eye’
  3. Latinc. 75 BCE–200 CEinoculōWiktionary, Latin inoculatio‘to ingraft an eye or bud of one tree into another, inoculate, graft by budding, implant’
  4. Latinc. 75 BCE–200 CEinoculātioWiktionary, English inoculation‘inoculation, ingrafting’
  5. Englishearliest quotation 1837inoculationWiktionary, English inoculation. Earliest quotation in Wiktionary’s entry: 1837, Letitia Elizabeth Landon, The End: “We owe, also, to Lady Mary the introduction of…”

Formed from inoculate + -ion

Proto-Italic *okʷ(e)los

Latin oculus ‘eye’

Latin inoculō ‘to ingraft an eye or bud of one plant into…’

Latin inoculātus

Middle English inoculaten ‘to graft’

English inoculate

Linked words

through Proto-Indo-European *h₃ekʷ- ‘to see’

eye, anthropology, optics, ogle, awk, synoptic, anthropoid, 39 more

through Latin oculus ‘eye’

oculus, ocular, doily, monocle, 17 more

Today it means

noun The introduction of an antigenic substance or vaccine into the body to produce immunity to a specific disease.

Sources

Sources: Wiktionary, “inoculation”; the older steps come from the Wiktionary entries for Latin oculus, Latin inoculo, Latin inoculatio. 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-Italic *okʷ(e)los / inoculation

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