| acetylene (əˈsɛtɪˌliːn) | |
| —n | |
| 1. | Systematic name: ethyne a colourless flammable gas used in the manufacture of organic chemicals and in cutting and welding metals. Formula: C2H2 |
| 2. | a. another name for alkyne |
| b. (as modifier): acetylene series | |
| acetylenic | |
| —adj | |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| the offspring of a zebra and a donkey. |