spirocyclopentane

noun

A divalent radical in which a cyclopentane ring is fused to another ring at a single carbon atom, the two rings being more-or-less at right angles to one another

OriginEnglish cyclopentane ← Latin spīra ← Ancient Greek σπεῖρα (speîra) →
Scrabble 28
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Meanings

nounspirocyclopentane (plural spirocyclopentanes)

plural spirocyclopentanes

  1. chemistryA divalent radical in which a cyclopentane ring is fused to another ring at a single carbon atom, the two rings being more-or-less at right angles to one another

Origin

  1. Proto-Indo-European*sper-
  2. Proto-Indo-European*sper-yeh₂-
  3. Ancient Greekσπεῖρα (speîra)
  4. Latinspīra
  5. Englishspiro-
  6. Englishcyclopentane
  7. Englishspirocyclopentane

From spiro- + cyclopentane.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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