The Collaborative International Dictionary of English v.0.48:
oxyacetylene \ox`y*a*cet"y*lene\, a. Of or pertaining to a mixture of oxygen and actylene; as, an oxyacetylene torch. [PJC]WordNet (r) 3.0 (2006):
oxyacetylene n 1: a mixture of oxygen and acetylene; used to create high temperatures for cutting or welding metals