cell wallcell wall
The definition of a cell wall is the protective coating for a plant cell.
An example of a cell wall is the rigid cellulose outside the cell membrane of a plant.
Biol. the nonliving covering or separating wall of a cell; esp., the relatively rigid covering of a plant cell, containing cellulose, hemicellulose, lignin, etc.
The rigid outermost cell layer found in plants and certain algae, bacteria, and fungi but absent from animal cells.
(plural cell walls)
- (cytology) A thick, fairly rigid, layer formed around individual cells of bacteria, Archaea, fungi, plants, and algae (but not animals and other protists which generally have cell membranes without cell walls). The cell wall is external to the cell membrane and serves a structural function helping the cell maintain its shape and protecting the cell from damage.
- Rare spelling of cell wall.
- The three cells at the opposite end are known as antipodal cells and become invested with a cell-wall.
- They soon acquire a cell-wall, and germinate without a period of rest.
- The growth of the cell-wall takes place by the addition of new layers to those already formed.
- Tetraspores are at first naked, but soon acquire a cell-wall and germinate without a period of rest.
- Firm cell-wall, so the mol r ement remains quite unexplained.