bicyclic.
Having two cycles.
Meaning & usage
Having two cycles.
Having two rings of atoms in the molecule; the rings may be fused, as in naphthalene, or separate, as in biphenyl.
Where this word comes from
Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- Proto-Indo-European *kʷelh₁-redup. Proto-Indo-European *-os Proto-Indo-European *kʷékʷlos Proto-Hellenic *kʷókʷlos Proto-Hellenic *kúklos 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 bicyclic From bi- + cyclic.
A bicyclic compound.
Where this word comes from
Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- Proto-Indo-European *kʷelh₁-redup. Proto-Indo-European *-os Proto-Indo-European *kʷékʷlos Proto-Hellenic *kʷókʷlos Proto-Hellenic *kúklos 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 bicyclic From bi- + cyclic.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.