| Answer | Crossword Clue |
|---|---|
| VENT | Opening for gas or steam |
| VENT | Opening for gas, steam, or lava |
| PORTS | Passages for gas, steam, etc. |
| EOUS | Ending for right or gas |
| HTG | A use for oil or gas: Abbr. |
| AEROMETER | Instrument for finding the weight or density of a gas. |
