pneumatocyst: Meaning and Definition of

pneu•mat•o•cyst

Pronunciation: (noo-mat'u-sist, nyoo-, n'mu-tu-, ny'), [key]
— n. Biol.
  1. the cavity of a pneumatophore.
  2. pneumatophore.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.