Definition of cell wall in US English:

cell wall


  • 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.

    • ‘Components of the cell wall of fungi are powerful and general elicitors in plants.’
    • ‘Major constituents of the cell wall are cellulose, hemicelluloses and pectins.’
    • ‘As a cell expands, its plasma membrane and cell wall must increase in area.’
    • ‘Similar reactions can be seen in animal cells although they lack the rigid cell wall.’
    • ‘The direction of cell growth is determined by the orientation of the cellulose fibrils in the cell wall.’


cell wall

/ˌsel ˈwôl/