Etymograph

English

incubation

Incubation comes from Latin incubō ‘to lie on’, from Proto-Italic *en- ‘in, into, in-’, and ultimately from Proto-Indo-European *h₁én ‘in’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₁én1‘in’reconstructed
  2. Proto-Italicc. 1500–700 BCE*en1‘in’reconstructed
  3. Proto-Italicc. 1500–700 BCE*en-1‘in, into, in-’reconstructed
  4. Proto-Italicc. 1500–700 BCE*kubāō1‘to lie down’reconstructed
  5. Proto-Italicc. 1500–700 BCE*enkubāō1‘to lie in’reconstructed
  6. Latinc. 75 BCE–200 CEincubō2‘to lie on’
  7. Latinc. 75 BCE–200 CEincubātiō2
  8. Englishearliest quotation 1978incubation2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin incubo
  2. 2 Wiktionary, English incubation
  3. Earliest quotation in Wiktionary’s entry: 1978, Benjamin Walker, Encyclopedia of Metaphysical Medicine: “Incubation in the vicinity of burial places, cremation grounds,…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₁énWiktionary, Latin incubo‘in’reconstructed
  2. Proto-Italicc. 1500–700 BCE*enWiktionary, Latin incubo‘in’reconstructed
  3. Proto-Italicc. 1500–700 BCE*en-Wiktionary, Latin incubo‘in, into, in-’reconstructed
  4. Proto-Italicc. 1500–700 BCE*kubāōWiktionary, Latin incubo‘to lie down’reconstructed
  5. Proto-Italicc. 1500–700 BCE*enkubāōWiktionary, Latin incubo‘to lie in’reconstructed
  6. Latinc. 75 BCE–200 CEincubōWiktionary, English incubation‘to lie on’
  7. Latinc. 75 BCE–200 CEincubātiōWiktionary, English incubation
  8. Englishearliest quotation 1978incubationWiktionary, English incubation. Earliest quotation in Wiktionary’s entry: 1978, Benjamin Walker, Encyclopedia of Metaphysical Medicine: “Incubation in the vicinity of burial places, cremation grounds,…”

Linked words

through Proto-Indo-European *h₁én ‘in’

in, internal, entrance, indigenous, intern, endo, dysentery, interregnum, enteral, 33 more

through Proto-Italic *en ‘in’

encounter, ensemble, intimate, intestine, agog, intimation, 9 more

through Proto-Italic *en- ‘in, into, in-’

impulse, infirmary, incense, infirm, impel, censer, 8 more

through Proto-Italic *kubāō ‘to lie down’

covid, cube, cubicle, succubus, cubit, 17 more

Today it means

noun Sitting on eggs for the purpose of hatching young; a brooding on, or keeping warm, to develop the life within, by any process.

Sources

Sources: Wiktionary, “incubation”; the older steps come from the Wiktionary entry for Latin incubo. 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 *h₁én / incubation

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