(no̵̅o̅′mə tō fôr′, -tə-; nyo̵̅o̅′-; no̵̅o̅ mat′ō-, -ə-; nyo̵̅o̅-)
- Bot. a porous, woody, specialized branch growing upright into the air from the buried roots of certain swamp trees, as the mangrove, and providing access to the atmosphere
- Zool. a polyp with a gas-filled cavity in siphonophore hydrozoans, serving as a float for the colony
See pneumatophore in American Heritage Dictionary 4
- A gas-filled sac serving as a float in some colonial marine hydrozoans, such as the Portuguese man-of-war.
- Botany A specialized respiratory root structure in certain aquatic plants, such as the bald cypress.
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