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cyclopentane

noun

cyclopentane is a noun meaning “An alicyclic hydrocarbon, C₅H₁₀; a volatile inflammable liquid, sometimes used as a solvent” (English Wiktionary, September 2026). It is spelled C-Y-C-L-O-P-E-N-T-A-N-E, and it appears about once in every 71 million words in written English (wordfreq, 2021 data). The plural of cyclopentane is cyclopentanes.

What does cyclopentane mean?

noun

  1. 1

    An alicyclic hydrocarbon, C₅H₁₀; a volatile inflammable liquid, sometimes used as a solvent.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of cyclopentane

  • cyclopentanes plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is cyclopentane?

Cyclopentane appears about once in every 71 million words in written English, the 265,644th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Cyclopentane in Spanish, French, German and Portuguese

In the sense alicyclic hydrocarbon, C5H10:

LanguageWords
Frenchcyclopentane
GermanCyclopentan

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.