Etymograph

English

encyclical

Encyclical comes from Ancient Greek ἐγκύκλιος ‘circular, general’, from κύκλος ‘circle’, and ultimately from Proto-Indo-European *kʷékʷlos.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kʷékʷlos1‘circle, wheel’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*kúklos1‘circle, wheel’reconstructed
  3. Ancient Greekc. 800–300 BCEκύκλος2kúklos‘circle’
  4. Ancient Greekc. 800–300 BCEἐγκύκλιος2enkúklios‘circular, general’
  5. Englishearliest quotation 2026encyclical2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Ancient Greek κύκλος
  2. 2 Wiktionary, English encyclical
  3. Earliest quotation in Wiktionary’s entry: 2026, Angela Giuffrida, Pope Leo denounces ‘culture of power’ driving rise of AI: “In his encyclical – the first major text on…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kʷékʷlosWiktionary, Ancient Greek κύκλος‘circle, wheel’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*kúklosWiktionary, Ancient Greek κύκλος‘circle, wheel’reconstructed
  3. Ancient Greekc. 800–300 BCEκύκλοςWiktionary, English encyclicalkúklos‘circle’
  4. Ancient Greekc. 800–300 BCEἐγκύκλιοςWiktionary, English encyclicalenkúklios‘circular, general’
  5. Englishearliest quotation 2026encyclicalWiktionary, English encyclical. Earliest quotation in Wiktionary’s entry: 2026, Angela Giuffrida, Pope Leo denounces ‘culture of power’ driving rise of AI: “In his encyclical – the first major text on…”

Linked words

through Proto-Indo-European *kʷékʷlos ‘circle, wheel’

wheel, chakra, 12 more

through Proto-Hellenic *kúklos ‘circle, wheel’

bicycle, tricycle, 6 more

through Ancient Greek κύκλος ‘circle’

cycle, kike, cyclic, cyclamen, 7 more

Today it means

noun A papal letter, intended for general circulation in the Catholic Church.

Sources

Sources: Wiktionary, “encyclical”; the older steps come from the Wiktionary entry for Ancient Greek κύκλος. 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 *kʷékʷlos / encyclical

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