Cellulose

(SEL-yoo-lose) A building block of plant cells and fiber. Cellulose cannot be digested by people, and is used to add bulk to the diet.

A complex polysaccharide composed of long linear chains of glucose residues. It comprises 40% to 55% by weight of the plant cell wall.

The fundamental constituent of all vegetative tissue; the most abundant material in the world.

The main carbohydrate in living plants. Cellulose forms the skeletal structure of the plant cell wall.