Encara no tenim significats per a "ignite spontaneously".
1These imperfect coals, when placed in a heap, ignite spontaneously.
2That various substances ignite spontaneously is explained by chemic phenomena, the conditions of which do not exist in the human frame.
3It throws up asphaltum, and is said to emit gaseous emanations, which ignite spontaneously, and are seen at a great distance.
4That it would be impossible to load the Columbiad, and that the pyroxyle would ignite spontaneously under the weight of the projectile, 3,000 dols.
5It is also pyrophoric and ignites spontaneously in air when the temperature is below 55°C.
6The 20th century, for Japan, was like a ride on a rocket sled, with successive bundles of fuel igniting spontaneously, one after another.
Aquesta col·locació està formada per: