: any of several polysaccharides that are polymers of mannose and occur especially in plant cell walls
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Crafted with moringa, mannan, and squalene to form a moisture shield to aid in moisture retention and provide a dewy finish.
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Kirsten Chanel Webber, Rolling Stone, 17 Dec. 2024
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Kirsten Chanel Webber, Rolling Stone, 17 Dec. 2024
Cite this Entry
“Mannan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mannan. Accessed 25 Mar. 2026.
Copy CitationMedical Definition
mannan
noun
man·nan
ˈman-ˌan, -ən 
: any of several polysaccharides that are polymers of mannose and occur especially in plant cell walls and in some microorganisms (as yeast)
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