Etymograph

English

elliptical

Elliptical comes from Ancient Greek ἐλλειπτικός ‘defective’, from ἐλλείπω ‘I leave out, omit’, and ultimately from Proto-Indo-European *leykʷ-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*leykʷ-1‘to leave behind’reconstructed
  2. Ancient Greekc. 800–300 BCEλείπω2‘to leave’
  3. Ancient Greekc. 800–300 BCEἐλλείπω3elleípō‘I leave out, omit’
  4. Ancient Greekc. 800–300 BCEἐλλειπτικός3elleiptikós‘defective’
  5. Englishearliest quotation 1876elliptical3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Ancient Greek λείπω
  2. 2 Wiktionary, Ancient Greek ἐλλείπω
  3. 3 Wiktionary, English elliptical
  4. Earliest quotation in Wiktionary’s entry: 1876, Chapter XIX: “Having admitted that the projectile was describing an orbit…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*leykʷ-Wiktionary, Ancient Greek λείπω‘to leave behind’reconstructed
  2. Ancient Greekc. 800–300 BCEλείπωWiktionary, Ancient Greek ἐλλείπω‘to leave’
  3. Ancient Greekc. 800–300 BCEἐλλείπωWiktionary, English ellipticalelleípō‘I leave out, omit’
  4. Ancient Greekc. 800–300 BCEἐλλειπτικόςWiktionary, English ellipticalelleiptikós‘defective’
  5. Englishearliest quotation 1876ellipticalWiktionary, English elliptical. Earliest quotation in Wiktionary’s entry: 1876, Chapter XIX: “Having admitted that the projectile was describing an orbit…”

Formed from elliptic + -al

Proto-Indo-European *leykʷ- ‘to leave behind’

Ancient Greek λείπω ‘to leave’

Ancient Greek ἐλλείπω ‘I leave out, omit’

Ancient Greek ἐλλειπτικός ‘defective’

English elliptic

Linked words

through Proto-Indo-European *leykʷ- ‘to leave behind’

loan, lend, delinquent, relinquish, relic, delinquency, 15 more

through Ancient Greek λείπω ‘to leave’

ecliptic, 7 more

Today it means

adj In a shape of, or reminding of, an ellipse; oval.

Sources

Sources: Wiktionary, “elliptical”; the older steps come from the Wiktionary entries for Ancient Greek λείπω, Ancient Greek ἐλλείπω. 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 *leykʷ- / elliptical