Originally: the gas-filled chamber of a pneumatophore (pneumatophore, n. 1). Later more widely: any air-filled sac in an organism, esp. in an…
| 单词 | θ32142 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > order Siphonophora > member of > part containing air-cavity > air-sac (1) pneumatocyst1859 Originally: the gas-filled chamber of a pneumatophore (pneumatophore, n. 1). Later more widely: any air-filled sac in an organism, esp. in an… |
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