D defs.my
Entry 1 sense Webster, 1913

Acetylene

/əs-ĕt'-əl-ēnˌ/ · A·cet·y·lene · IPA /əˈsɛtəlˌin/
01 n. A gaseous compound of carbon and hydrogen, in the proportion of two atoms of the former to two of the latter. It is a colorless gas, with a…
  1. 1.
    A gaseous compound of carbon and hydrogen, in the proportion of two atoms of the former to two of the latter. It is a colorless gas, with a peculiar, unpleasant odor, and is produced for use as an illuminating gas in a number of ways, but chiefly by the action of water on calcium carbide. Its light is very brilliant.(Chem.)