Neopentane

//ˌni(ː)oʊ̯ˈpɛnteɪ̯n// noun

noun ·Rare ·Advanced level

Definitions

Noun

1
The aliphatic alkane 2,2-dimethylpropane; isomeric with pentane and isopentane uncountable

Synonyms

dimethylpropane tetramethylmethane tetramethylmethane

Etymology

From neo- + pentane.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.