Ash was the solid, somewhat powdery substance that was left over after any fuel would undergo combustion.
In 2269, when told to commence his sensor sweep by James T. Kirk and before being cut off by a loud noise, Arex said, "Sensors show crystalline surface heavily fractured by lava flows. Ash and smoke suspended in oxygen-nitrogen atmosphere." (TAS: "The Terratin Incident")
| Fire |
|---|
| Fires: Ash • Campfire • Combustion (Spontaneous combustion) • Smoke • Spark • Wildfire (Brush fire) |
| Firefighting: Fire extinguisher • Fire department (FDNY • Toronto Fire) • Firefighter • Fire engine • Fire hose • Fire hydrant • Fireman's carry • Fireman's pole • Fire station (Fire House Nº 5) • Fire suppression (Walkerite 342) |
| Detection and evasion: Fire alarm • Fire alert • Fire escape • Fire suppression system • Firewall |
| Fire-starting: Candle • Flammable substance • Fire hazard • Fireplace • Fire trap • Firewood (Kindling) • Lighter • Match |
| Food and drink: Flambé (Antimatter Flambé • Flambé noodles) • Flaming cocktail |
| Other: Arson • Burn • Fireworks display |