单词	pneumatocyst
释义	pneumatocyst noun pneu·​ma·​to·​cyst ˈn(y)ü-mə-tō-ˌsist  n(y)u̇-ˈma-tə- 1 : the air bladder of certain algae and aquatic plants … many seaweeds have floats called pneumatocysts, filled with oxygen or carbon dioxide. Michael Le Page 2 : a benign, usually asymptomatic, gas-filled lesion found in bone especially of the ilium, sacrum, or spinal vertebra Word History Etymology pneumato- + -cyst First Known Use 1859, in the meaning defined at sense 1 Medical Definition pneumatocyst noun pneu·​ma·​to·​cyst ˈn(y)ü-mət-ō-ˌsist  n(y)u̇-ˈmat-ə- : a benign, usually asymptomatic, gas-filled lesion found in bone especially of the ilium, sacrum, or spinal vertebra
随便看	introductive introductor introductorily introductoriness introductorinesses introductory introfied introfies introflection introflex introflexion introfy introfying introgressant introgressants introgression introgressions introgressive introgressive hybridization introit introits introituses introject introjected introjecting

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