cell wall

noun Biology.

the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell.

Origin of cell wall

First recorded in 1840–50

Words nearby cell wall

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Example sentences from the Web for cell wall

British Dictionary definitions for cell wall

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

Medical definitions for cell wall

cell wall

n.

The rigid outermost cell layer found in plants and certain algae, bacteria, and fungi but characteristically absent from animal cells.

Scientific definitions for cell wall

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.

Cultural definitions for cell wall

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.

notes for cell wall

It is the cell walls that give plant stems and wood their stiffness.