What does "acetylene" mean?

Any organic compound having one or more carbon–carbon triple bonds; an alkyne.

What is a synonym for "acetylene"?

Common synonyms include: ethyne, alkyne, ammonia, carbon dioxide, ethyne, gas.

Pronounced //əˈsɛtəlˌin//.

//əˈsɛtəlˌin// noun

noun ·Uncommon ·Advanced level

Noun

1
Any organic compound having one or more carbon–carbon triple bonds; an alkyne. countable
"The acetylene gas lighting in the station offices and platforms at Kyle of Lochalsh recently has been replaced by electric lighting."
2
a colorless flammable gas used chiefly in welding and in organic synthesis wordnet
3
Ethyne; the simplest alkyne, a hydrocarbon of formula HC≡CH. It is a colourless, odourless, extremely flammable, explosive gas, formerly used as an illuminating gas, but now used in welding and metallurgy. uncountable
4
A lamp powered by acetylene, particularly a motor vehicle headlight. countable, uncountable
"Mrs. Winnie had kindly sent her limousine car for them, and it stood throbbing in front of the hotel-entrance, its acetylenes streaming far up the street."