ethane

 
Pronunciation: /ˈiːθeɪn, ˈɛθ-/

noun

[mass noun] Chemistry
  • a colourless, odourless, flammable gas which is a constituent of petroleum and natural gas. It is the second member of the alkane series.
    • Chemical formula: C2H6

Origin:

late 19th century: from ether + -ane2