| A | B |
|---|
| Defect | a rejectable discontinuities |
| Deposited metal | filler metal that has been added during a welding operation |
| Edge preparation | the surface prepared on the edge of a member for welding |
| Edge weld | a weld in an edge joint |
| Effective throat | the minimum distance from the root of a weld to its face less any reinforcement |
| Flash back | a recession of the flame into or back of the mixing chamber of the torch |
| Forehand welding | torch or gun is directed toward the progress of welding |
| Kerf | the width of the cut produced during a cutting process |
| Liquidus | the lowest temperature at which a metal or an alloy is completely liquid |
| Manual welding | when welding is performed and controlled completely by hand |
| Neutral flame | equal amounts of acetylene and oxygen |
| OFC-A | oxycetylene cutting |
| OAW | oxyacetylene welding |
| OFC | oxyfuel gas cutting |
| OFW | oxyfuel gas welding |
