pentaborane

P3E1N1T1A1B3O1R1A1N1E1

noun

Either of two boranes containing five boron atoms, but especially the stable compound B₅H₉ once proposed as a rocket fuel

OriginEnglish borane ← Ancient Greek πεντᾰ- (pentă-) ← Proto-Hellenic *pénkʷe →
Scrabble 15
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Meanings

nounpentaborane (countable and uncountable, plural pentaboranes)

plural pentaboranes

  1. countableuncountablechemistryEither of two boranes containing five boron atoms, but especially the stable compound B₅H₉ once proposed as a rocket fuel

Origin

  1. Proto-Indo-European*pénkʷe
  2. Proto-Hellenic*pénkʷe
  3. Ancient Greekπέντε (pénte)
  4. Ancient Greekπεντᾰ- (pentă-)
  5. Englishpenta-
  6. Englishborane
  7. Englishpentaborane

From penta- + borane.

Full word history & related roots →
Cite this entry
APA

pentaborane. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/pentaborane

MLA

“pentaborane.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pentaborane. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “pentaborane,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/pentaborane.

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