pentane
/ˈpɛnteɪn/noun
pentane is spelled P-E-N-T-A-N-E: 7 letters and 2 syllables. It appears about once in every 23 million words in written English, the 146,811th most frequent word form (wordfreq, 2021 data). As a noun, pentane means “An aliphatic hydrocarbon of chemical formula C₅H₁₂; either of the three isomers n-pentane, methylbutane (isopentane), and dimethylpropane…” (English Wiktionary, September 2026). The plural of pentane is pentanes.
How many letters and syllables are in pentane?
| Letters | 7: P-E-N-T-A-N-E |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | about once in every 23 million words; the 146,811th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is pentane?
Pentane appears about once in every 23 million words in written English, the 146,811th 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).
How do you pronounce pentane?
- /ˈpɛnteɪn/
Pentane has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-pentane.wav, Wikimedia Commons (author and licence on each file's page).
Forms of pentane
- pentanes plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does pentane mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
An aliphatic hydrocarbon of chemical formula C₅H₁₂; either of the three isomers n-pentane, methylbutane (isopentane), and dimethylpropane (neopentane); volatile liquids under normal conditions.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Pentane in Spanish, French, German and Portuguese
In the sense aliphatic hydrocarbon: C5H12:
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.
Where does pentane come from?
From pent- + -ane.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).