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cell wall
[ sel wawl ]
noun
, Biology.
- the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell.
cell wall
noun
- the outer layer of a cell, esp the structure in plant cells that consists of cellulose, lignin, etc, and gives mechanical support to the cell
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
cell wall
- The rigid outer covering of a typical plant cell , composed mainly of cellulose and lying outside the cell membrane . Animal cells do not have cell walls.
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Notes
It is the cell walls that give plant stems and wood their stiffness.
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Word History and Origins
Origin of cell wall1
First recorded in 1840–50
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Example Sentences
In my cell, as in the others, there was a narrow iron cot, which could be folded and propped up to the cell wall.
From Project Gutenberg
Parachromophorous Bacteria: in which the pigment is stored in the cell wall of the organism.
From Project Gutenberg
A thin cell-wall encloses the granular protoplasm, in which vacuoles and sometimes a nucleus may be noted.
From Project Gutenberg
Here the conjugating cells swim free in water; they have no cell-wall, and move actively by cilia.
From Project Gutenberg
Two contiguous cells of two parallel filaments push each a little projection from its cell-wall toward the other.
From Project Gutenberg
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