> as lemmas
neopentane
neopentane n. 
/nɪəˈpɛnteɪn/,
Brit. /ˌniːə(ʊ)ˈpɛnteɪn/
, /ˌniːə(ʊ)ˈpɛnteɪn//nɪəˈpɛnteɪn/U.S. /ˌnioʊˈpɛnˌteɪn/
an isomer of pentane which is an easily condensable gas found in small amounts in petroleum; dimethylpropane, C(CH3)4./ˌnioʊˈpɛnˌteɪn/ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkanes > straight-chained by number of carbon atoms > five > isomer of
neopentane1876
1876 W. Odling in London, Edinb., & Dublin Philos. Mag. 5th Ser. 1 209 Isopentane and neopentane.
1938 Encycl. Brit. Bk. of Year 145/1 The highly symmetrical neopentane molecule.
1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) I. 249/1 Two alkanes, neopentane (dimethylpropane) and neohexane (2,2-dimethylbutane) are named unambiguously by using the prefix ‘neo’.
1997 Proc. National Acad. Sci. U.S.A. 94 11783 Nitration of alkanes such as methane..neopentane, and cyclohexane.
<
as lemmas