D defs.my
Entry 1 sense Webster, 1913

Dimethyl

· Di·meth·yl · IPA /daɪˈmɛ.θəl/
01 n. Ethane; -- sometimes so called because regarded as consisting of two methyl radicals. See Ethane.
  1. 1.
    Ethane; -- sometimes so called because regarded as consisting of two methyl radicals. See Ethane.(Chem.) See: Ethane