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cell wall n.
The rigid outermost cell layer found in plants and certain algae, bacteria, and fungi but characteristically absent from animal cells.
|cell wall |
The outermost layer of cells in plants, bacteria, fungi, and many algae that gives shape to the cell and protects it from infection. In plants, the cell wall is made up mostly of cellulose, determines tissue texture, and often is crucial to cell function. Compare cell membrane.