noun
combustibility; inflammability; burnability
Technical term used in fire safety and materials science. Often contrasted with 可燃性 (flammability) or 不燃性 (non-combustibility).
See also: 可燃性
この素材の支燃性を試験する必要がある。
We need to test the combustibility of this material.
支燃性ガスは火災のリスクを高める。
Combustible gases increase the risk of fire.
不燃性 means non-combustibility, the opposite of 支燃性.
Compound of 支 (support, sustain) + 燃 (burn) + 性 (property). The exact derivation is uncertain; the term is a technical coinage for the property of supporting combustion.