Video shows what cellulose means. A complex carbohydrate that 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.. A polysaccharide containing many glucose units in parallel chains.. cellulose synonyms: E460 when used as an emulsifier. Cellulose Meaning. How to pronounce, definition audio dictionary. How to say cellulose. Powered by MaryTTS, Wiktionary