cell wall

noun

: the usually rigid nonliving permeable wall that surrounds the plasma membrane and encloses and supports the cells of most plants, bacteria, fungi, and algae see cell illustration

Examples of cell wall in a Sentence

Recent Examples on the Web

For example, beta-lactam antibiotics like penicillin or Keflex (cephalexin) block molecules from linking together, preventing the formation of a cell wall. —Femi Aremu, Verywell Health, 19 Dec. 2024

Imai homed in on the smaller molecules that cells use to produce NAD+, which can more easily penetrate cell walls. —Mattie Kahn, Vogue, 17 Dec. 2024

Though studies are limited, some research suggests that the ice crystals formed during freezing cause the rupture of fruit cell walls, which changes the texture and flavor of frozen fruit, like blueberries, during the thawing process. —Jillian Kubala, Rd, Health, 3 Dec. 2024

Plants and their parts are useful crime evidence because plant cell walls, spores, and pollens are distinctive enough to be recognizable and are composed of strong compounds that are resistant to destruction over prolonged periods of time. —Grrlscientist, Forbes, 21 Nov. 2024

Word History

First Known Use

1840, in the meaning defined above

Kids Definition

cell wall

noun

: the firm nonliving layer that encloses and supports the cells of most plants, bacteria, fungi, and algae

Medical Definition

cell wall

noun

: the usually rigid nonliving permeable wall that surrounds the plasma membrane and encloses and supports the cells of most plants, bacteria, fungi, and algae