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
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Radiation destroys cell walls and other key molecular structures within the body. The Week Uk, TheWeek, 26 Apr. 2026 The heat ruptures the cell walls in the leaves, causing desiccation and ultimately killing the weed. Andy Wilcox, Better Homes & Gardens, 25 Apr. 2026 The heat and humidity break down the structure of garlic by softening its cell walls and altering its sugars and proteins. Mavra Javed, The Conversation, 24 Apr. 2026 Vinegar’s high acetic acid properties break down cell walls and dehydrate the weed growing between your pavers. Alexandra Kelly, Martha Stewart, 21 Apr. 2026 See All Example Sentences for cell wall

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of cell wall was in 1840

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Cite this Entry

“Cell wall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cell%20wall. Accessed 1 May. 2026.

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

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