Etymograph

English

vertex

Vertex comes from Latin vertex ‘whirl, eddy’, from vertō ‘to turn around, turn about’, and ultimately from Proto-Indo-European *wert-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*wert-1‘to turn, to rotate, spin’reconstructed
  2. Proto-Italicc. 1500–700 BCE*wertō1‘to turn’reconstructed
  3. Latinc. 75 BCE–200 CEvertō2‘to turn around, turn about’
  4. Latinc. 75 BCE–200 CEvertex3‘whirl, eddy’
  5. Englishtodayvertex3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin verto
  2. 2 Wiktionary, Latin vertex
  3. 3 Wiktionary, English vertex

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*wert-Wiktionary, Latin verto‘to turn, to rotate, spin’reconstructed
  2. Proto-Italicc. 1500–700 BCE*wertōWiktionary, Latin verto‘to turn’reconstructed
  3. Latinc. 75 BCE–200 CEvertōWiktionary, Latin vertex‘to turn around, turn about’
  4. Latinc. 75 BCE–200 CEvertexWiktionary, English vertex‘whirl, eddy’
  5. EnglishtodayvertexWiktionary, English vertex

The story

Late Middle English, borrowed from Latin vertex (‘whirl, eddy; top, crown, peak, summit’).

Full etymology on Wiktionary

Linked words

through Proto-Indo-European *wert- ‘to turn, to rotate, spin’

word, worth, weird, ridiculous, universe, ridicule, derision, wurst, deride, invert, derisive, extraversion, 58 more

through Proto-Italic *wertō ‘to turn’

adverse, diversion, inverse, transverse, inversion, aversion, perverse, averse, perversion, reversion, 41 more

through Latin vertō ‘to turn around, turn about’

university, version, conversation, divorce, diversity, versus, diverse, verse, advertisement, versatile, convertible, adversity, diversification, advert, divert, revert, pervert, vertigo, introvert, avert, subvert, verso, perversity, evert, 50 more

through Latin vertex ‘whirl, eddy’

vertical, vortex, 2 more

Today it means

noun The highest point, top or apex of something.

Sources

Sources: Wiktionary, “vertex”; the older steps come from the Wiktionary entries for Latin verto, Latin vertex. 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 *wert- / vertex

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