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Cell wall   /sɛl wɔl/   Listen
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.

WordNet 3.0 © 2010 Princeton University

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"Cell wall" Quotes from Famous Books

... again are themselves complex. They consist of a cell wall perforated by extremely minute orifices, of protoplasm, cell fluid, and numerous granules of "Chlorophyll," which give the leaf ...
— The Beauties of Nature - and the Wonders of the World We Live In • Sir John Lubbock

... granular or reticulated in appearance, and on the threads of the meshwork may be one or more enlargements, called nucleoli. In some cases the protoplasm at the circumference is so modified as to give the appearance of a limiting membrane called the cell wall. In brief, then, a cell is a mass of nucleated protoplasm; the nucleus may have a nucleolus, and the cell may be limited by a cell wall. Every tissue of the human body is formed through the agency of protoplasmic cells, although in most cases ...
— A Practical Physiology • Albert F. Blaisdell

Words linked to "Cell wall" :   plant cell, layer

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