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Meaning of pneumatophore

pneu•mat•o•phore

Pronunciation: (noo-mat'u-fôr", -fōr", nyoo-, n'mu-tu-, ny'-), [key]
— n.
  1. a specialized structure developed from the root in certain plants growing in swamps and marshes, serving as a respiratory organ.
  2. the air sac of a siphonophore, serving as a float.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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