n.
Pronunciation: ə - ' se-t ə l- ə n, -t ə l- ˌ ē n
Function: noun
Date: 1864
: a colorless gaseous hydrocarbon HC ≡ CH used chiefly in organic synthesis and as a fuel (as in welding and soldering)
– acet · y · le · nic \ ə - ˌ se-t ə l- ' ē -nik, - ' e-nik \ adjective