Definition of cell wall Cell wall
We found 3 definitions of cell wall from 3 different sources.
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What does cell wall mean?
WordNet
Noun |
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| cell wall - a rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells; maintains the shape of the cell and serves as a protective barrier | ||
| layer thin structure composed of a single thickness of cells | ||
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Wiktionary 
- cell wall (Noun)
A thick, fairly rigid, layer formed around individual cells of bacteria, Archaea, fungi, plants, and algae but not animals and other protists which generally have cell membranes without cell walls. The cell wall is external to the cell membrane and serves a structural function helping the cell maintain its shape and protecting the cell from damage.
Wikipedia 
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A cell wall is the wall of a plant cell. Animals' cells do not have cell walls. It is there mainly to protect the cell from damage. It is also there to make the cell strong, to keep its shape, and to control the growing of the cell and plant.
In a plant cell, the cell wall is made of long molecules called cellulose, pectin and hemicellulose. The cell wall lets some proteins in and keeps others out. Water and small molecules can go through to help the cell.
