pneumatophore Hear it!

pneumatophore Definition

pneu·ma·to·phore (no̵̅o̅′mə tō fôr′, -tə-; -nyo̵̅o̅′-; no̵̅o̅ mat′ō-, -ə-; -----nyo̵̅o̅-)

noun

  1. 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
  2. Zool. a polyp with a gas-filled cavity in siphonophore hydrozoans, serving as a float for the colony