oxyacetylene torch

Science Dictionary
oxyacetylene torch   (ŏk'sē-ə-sět'l-ĭn, -ēn')  Pronunciation Key 
A gas torch that burns a mixture of acetylene and oxygen to produce a high-temperature flame (3,000°C or 5,400°F) that can weld or cut metal.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Oxyacetylene torch is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
WordNet
oxyacetylene torch

noun
a blowtorch that burns oxyacetylene 
WordNet® 3.0, © 2006 by Princeton University.
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