bicyclo

B3I1C3Y4C3L1O1

noun

A structure having two rings (either fused, or having a common bridgehead atom)

OriginEnglish cyclo- ← Classical Latin cyclicus ← French cyclique →
UncommonScrabble 16
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Meanings

nounbicyclo (uncountable)
  1. in compoundsuncountablechemistryA structure having two rings (either fused, or having a common bridgehead atom)

Origin

  1. Proto-Indo-European*dwóh₁
  2. Proto-Indo-European*dwi-
  3. Proto-Italic*dwi-
  4. Latinbi-
  5. Englishbi-
  6. Proto-Indo-European*kʷelh₁-redup.
  7. Proto-Indo-European*kʷékʷlos
  8. Proto-Hellenic*kʷókʷlos
  9. Proto-Hellenic*kúklos
  10. Ancient Greekκύκλος (kúklos)
  11. Late Latincyclus
  12. Middle Englishcicle
  13. Englishcycle
  14. Ancient Greekκύκλος (kúklos)
  15. Ancient Greekκυκλῐκός (kuklĭkós)
  16. Classical Latincyclicu
  17. Middle Frenchcyclique
  18. Frenchcyclique
  19. Classical Latincyclicus
  20. Englishcyclic
  21. Englishcyclo-
  22. Englishbicyclo

From bi- + cyclo-.

Full word history & related roots →
Cite this entry
APA

bicyclo. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/bicyclo

MLA

“bicyclo.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/bicyclo. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “bicyclo,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/bicyclo.

Source: bicyclo on Wiktionary, CC BY-SA 4.0.