| Answer | Crossword Clue |
|---|---|
| eleoptene | the liquid part of a volatile oil |
| elaeoptene | the liquid part of a volatile oil |
| eleoptenes | ELEOPTENE, the liquid part of a volatile oil |
| elaeoptenes | ELAEOPTENE, the liquid part of a volatile oil |
| isoprene | colorless, volatile, water-insoluble liquid, C5H8, of the terpene class, usually obtained from rubber or from oil of turpentine by pyrolysis: used chiefly in the manufacture of synthetic rubber by polymerization |
| synfuel | a liquid or gaseous fuel derived especially from a fossil fuel that is a solid (as coal) or part of a solid (as tar sand or oil shale) |
