pneumatophore
noun
pneu·mat·o·phore
nu̇-ˈma-tə-ˌfȯr 
nyu̇-
1
: a muscular gas-containing sac that serves as a float on a siphonophore colony
2
: a usually partially exposed root of a wetland plant (such as a mangrove) that functions especially in the intake of oxygen from the atmosphere
Examples of pneumatophore in a Sentence
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The arrangement of these pneumatophores can help scientists tell pterosaur species apart.
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Michael Greshko, National Geographic, 10 Sep. 2019
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Michael Greshko, National Geographic, 10 Sep. 2019
Cite this Entry
“Pneumatophore.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pneumatophore. Accessed 14 Jul. 2025.
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