- cell wall
- nouna rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells; maintains the shape of the cell and serves as a protective barrier• Hypernyms: ↑layer• Part Holonyms: ↑plant cell
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noun1. : the somewhat rigid permeable wall typical of plant cells (as the cellulose or celluloselike layers secreted by the cytoplasm in most plants) at first thin and delicate but modified in extent, thickness, and chemical nature as it develops and matures — compare cutinization, lignify, primary wall* * *
Biol.the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell. See diag. under cell.[1840-50]* * *
cell wall noun (biology)The nonliving covering or separating wall of a cell, esp the semi-rigid covering of a plant cell, containing cellulose, lignin, etc• • •Main Entry: ↑cell* * *
a strong layer that surrounds each cell in some living things, protecting them and giving them shape* * *
cell wall,the hard, transparent outer covering of a plant cell, made up mostly of cellulose and surrounding the cell membrane: »The cell wall is generally present in plant cells where it serves to support the cells and the plant as a whole, but in animals it is frequently lacking (A. M. Winchester).
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n. Biology a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants, it consists mainly of cellulose
Useful english dictionary. 2012.