1 Cinquains are five lines long. 2  They have 2 syllables in the first line, 4 in the second, 6 in the third, 8 in the fourth line, and just 2 in the last line. 3  Cinquains do not need to rhyme, but you can include rhymes if you want to.
â¢ COMBUSTIBLE MATERIAL (noun). The noun COMBUSTIBLE MATERIAL has 1 sense: 1. a substance that can be burned to provide heat or power. Familiarity information: COMBUSTIBLE MATERIAL used as a noun is very rare. COMBUSTIBLE MATERIAL (noun). The noun COMBUSTIBLE MATERIAL has 1 sense: 1. a substance that can be burned to provide heat or power. Familiarity information: COMBUSTIBLE MATERIAL used as a noun is very rare.
Essentially, a combustible dust is any fine material that has the ability to catch fire and explode when mixed with air. Combustible dusts can be from: 1  most solid organic materials (such as sugar, flour, grain, wood, etc. ).2  many metals, and.ssentially, a combustible dust is any fine material that has the ability to catch fire and explode when mixed with air. Combustible dusts can be from: 1  most solid organic materials (such as sugar, flour, grain, wood, etc. ). 2  many metals, and.