Etymograph

English

omniscience

Omniscience comes from Latin scientia ‘knowledge’, from sciēns ‘knowing, aware’, and perhaps ultimately from Proto-Indo-European *skey- ‘to distinguish, dissect’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*skey-1‘to distinguish, dissect’uncertain
  2. Proto-Italicc. 1500–700 BCE*skijō1uncertain
  3. Latinc. 75 BCE–200 CEsciō2‘to be able to’
  4. Latinc. 75 BCE–200 CEsciēns3‘knowing, aware’
  5. Latinc. 75 BCE–200 CEscientia4‘knowledge’
  6. Englishearliest quotation 1847omniscience4

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin scio, which cites LIV
  2. 2 Wiktionary, Latin sciens
  3. 3 Wiktionary, Latin scientia
  4. 4 Wiktionary, English omniscience
  5. Earliest quotation in Wiktionary’s entry: 1847, – 1848 July, William Makepeace Thackeray: “If, a few pages back, the present writer claimed…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*skey-Wiktionary, Latin scio, which cites LIV‘to distinguish, dissect’uncertain
  2. Proto-Italicc. 1500–700 BCE*skijōWiktionary, Latin scio, which cites LIVuncertain
  3. Latinc. 75 BCE–200 CEsciōWiktionary, Latin sciens‘to be able to’
  4. Latinc. 75 BCE–200 CEsciēnsWiktionary, Latin scientia‘knowing, aware’
  5. Latinc. 75 BCE–200 CEscientiaWiktionary, English omniscience‘knowledge’
  6. Englishearliest quotation 1847omniscienceWiktionary, English omniscience. Earliest quotation in Wiktionary’s entry: 1847, – 1848 July, William Makepeace Thackeray: “If, a few pages back, the present writer claimed…”

Linked words

through Proto-Indo-European *skey- ‘to distinguish, dissect’

ship, equipment, shift, shed, skip, kyle, ski, shin, squire, conscience, sheath, skeet, skiff, scuttle, chine, skein, prescient, scullery, shud, 40 more

through Proto-Italic *skijō

nicely, 14 more

through Latin sciō ‘to be able to’

nice, conscious, prescience, 17 more

through Latin scientia ‘knowledge’

scientific, 3 more

Today it means

noun The capacity to know everything.

Sources

Sources: Wiktionary, “omniscience”; the older steps come from the Wiktionary entries for Latin scio, Latin sciens, Latin scientia. 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 *skey- / omniscience

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