pneumatophorePronunciation: /ˈnjuːmətəfɔː/Definition of pneumatophore noun 1 Zoology the gas-filled float of some colonial coelenterates, such as the Portuguese man-of-war. 2 Botany (in mangroves and other swamp plants) an aerial root specialized for gaseous exchange. pneumatophore in other Oxford dictionaries Definition of pneumatophore in the US English dictionary
