Word of the Day — April 21, 2026

cellulose

/ce-LLUL-os-e/nounPush me

Definition

The tough, stringy stuff that makes up plant cell walls and fiber in your food.

a polysaccharide that is the chief constituent of all plant tissues and fibers

Memory Hook

CELL-u-lose: It's literally the material that builds plant CELLS. Think of it as nature's construction material for every plant structure.