The extent to which something is inflammable(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "inflammability" in a sentence
"The main properties of asbestos fibers that can be exploited in industrial applications are their thermal, electrical, and sound insulation; inflammability; matrix reinforcement (cement, plastic, and resins); adsorption capacity (filtration, liquid sterilization); wear and friction properties (friction materials); and chemical inertia (except in acids)."
"Joseph Priestley, the great Unitarian humanist and discoverer of oxygen, was wedded to a bogus theory of the chemistry of gasses wherein they burned into “phlogiston,” which he called a “principle of inflammability.”"
"He accordingly resolved to manufacture and employ pyroxyle, although it has some inconveniences, that is to say, a great inequality of effect, an excessive inflammability, since it takes fire at one hundred and seventy degrees instead of two hundred and forty, and lastly, an instantaneous deflagration which might damage the firearms."