What does "neopentane" mean?

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

How do you pronounce "neopentane"?

Pronounced //ˌni(ː)oʊ̯ˈpɛnteɪ̯n//.

/ˌni(ː)oʊ̯ˈpɛnteɪ̯n/ noun

noun ·Rare ·Advanced level

Noun

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

From neo- + pentane.