Definition - What does Flammability mean?
Flammability is the capability of a material or substance to burn, ignite, combust or catch fire. It refers to the rate and likelihood of such phenomena occurring.
Corrosionpedia explains Flammability
Flammability is a characteristic that is used to describe the sensitivity of corrosive metals to environments that are rich in oxygen. Oxygen is a vital component to facilitate the occurrence of combustion. Therefore, it is vital to examine the type of response that materials have in the presence of oxygen to help prevent explosions, fires and other safety hazards.