Standard Lemma guide

cyclo-

prefix · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /sʌɪ.klə(ʊ)/
  • General-American: /saɪ.kloʊ/
  • General-American: /saɪ.klə/
  • US: Recorded audio is listed in the source snapshot.

1

prefix

Meaning 1

Circle, circular.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Examples

  • cyclorama, cyclometer

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

prefix

Meaning 2

A cyclic compound.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: chemistry, natural-sciences, physical-sciences

Examples

  • cyclohexane

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

prefix

Meaning 3

Cyclone.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: climatology, meteorology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

prefix

Meaning 4

Ciliary body.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *kwel- Proto-Indo-European *kwékwlos Ancient Greek κῠ́κλος (kŭ́klos)der. Late Latin cyclusbor. Middle English cicle English cycle ▲ Ancient Greek κύκλος (kúklos) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) Ancient Greek -ικός (-ikós) Ancient Greek κυκλῐκός (kuklĭkós)bor. Classical Latin cyclicuslbor. Middle French cyclique French cycliquebor. ▲ Classical Latin cyclicusbor. English cyclic English cyclo- From cycle, cyclic.

Across languages

Translations

11 source translations are retained for this English entry.

  • Catalan: ciclo- — circle
  • Finnish: syklo- — circle
  • French: cyclo- — circle
  • German: zyklo- — circle
  • Hungarian: ciklo- — circle
  • Italian: ciclo- — circle
  • Portuguese: ciclo- — circle
  • Spanish: ciclo- — circle
  • Swedish: cyklo- — circle
  • German: zyklo- — cyclic compound
  • Portuguese: ciclo- — cyclic compound