trimethylpentane

noun

Any of several isomers of octane having three methyl groups attached to a pentane chain; especially isooctane, used as a standard for octane number

Scrabble 26
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Meanings

nountrimethylpentane (plural trimethylpentanes)

plural trimethylpentanes

  1. chemistryAny of several isomers of octane having three methyl groups attached to a pentane chain; especially isooctane, used as a standard for octane number

Origin

From trimethyl + pentane.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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