the chief substance composing the cell walls or fibers of all plant tissue, a polymeric carbohydrate with the general formula (CHO): it is used in the manufacture of paper, textiles, explosives, etc.
See cellulose in American Heritage Dictionary 4
(sĕlˈyə-lōsˌ, -lōzˌ)
noun
A complex carbohydrate, (C6H10O5)n, that is composed of glucose units, forms the main constituent of the cell wall in most plants, and is important in the manufacture of numerous products, such as paper, textiles, pharmaceuticals, and explosives.