pneumatophore

noun
pneu·​mat·​o·​phore | \nu̇-ˈma-tə-ˌfȯr, nyu̇-\

Definition of pneumatophore 

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

First Known Use of pneumatophore

1859, in the meaning defined at sense 1

History and Etymology for pneumatophore

International Scientific Vocabulary

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The first known use of pneumatophore was in 1859

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