• (a.) Burning with a sudden and sparkling combustion, as niter; hence, slightly explosive; liable to snap and crackle when heated, as salt.
De·fla'gra·ble adjective [ See Deflagrate .] (Chemistry) Burning with a sudden and sparkling combustion, as niter; hence, slightly explosive; liable to snap and crackle when heated, as salt. 
deflagrable 1. Burning with a sudden and sparkling combustion; such as, niter; hence, slightly explosive. 2. Liable to snap and crackle when heated; such as, salt.