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.
An isotropic material is one which looks the same in every direction. We cannot define any special direction using the material properties. In other words, none of the properties depend the orientation; it is perfectly rotationally symmetric. Note that in order to be isotropic the material must be homogenous on the length scale of interest, ie the same at every point in the material. For instance, rubber is a very isotropic material. Take a rubber ball, and it will feel the same and bounce the same however you rotate it. On the other hand, wood is an anisotropic material: hit it with an axe and it will take more force to break of you are cutting across the grain than along it.