- A rapidly spreading fire, especially one occurring in a wildland area.
- (historical) Greek fire, Byzantine fire.
- (dermatology) A spreading disease of the skin, particularly erysipelas.
- (figuratively) Something that acts quickly and uncontrollably.
- 2015 January 18, Monty Munford, “What’s the point of carrying a mobile phone nowadays?”, in The Daily Telegraph:
- So, it appears a revolution has happened and a very unexpected one. Of course it was only a matter of time before it happened. With WiFi connectivity spreading faster than wildfire and a laptop or tablet in one’s bag, what’s the point of a mobile nowadays?
rapidly spreading fire
Greek fire — see Greek fire
spreading disease of the skin