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pneu·mat·o·phore(no͞o-măt′ə-fôr′, nyo͞o-, no͞o′mə-tə-, nyo͞o′-)
1. A gas-filled sac serving as a float in some colonial marine hydrozoans, such as the Portuguese man-of-war.
2. Botany A specialized respiratory root in certain aquatic plants, such as the bald cypress, that grows upward and protrudes above the water or mud into the air.
1. (Botany) a specialized root of certain swamp plants, such as the mangrove, that branches upwards, rising above ground, and undergoes gaseous exchange with the atmosphere
2. (Zoology) a polyp in coelenterates of the order Siphonophora, such as the Portuguese man-of-war, that is specialized as a float
pneu•mat•o•phore(nʊˈmæt əˌfɔr, -ˌfoʊr, nyʊ-)
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.
pneu•ma•toph•or•ous (ˌnu məˈtɒf ər əs, ˌnyu-) adj.
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|Noun||1.||pneumatophore - an air-filled root (submerged or exposed) that can function as a respiratory organ of a marsh or swamp plant|
root - (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground