hy·po·blast /ˈhaɪpəˌblæst/
  下胚層; 內胚層
  hy·po·blast /ˈhaɪpəˌblæst/ 名詞
  下胚層
  Hy·po·blast n.  Biol. The inner or lower layer of the blastoderm; -- called also endoderm, entoderm, and sometimes hypoderm. See Illust. of Blastoderm, Delamination, and Ectoderm.
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  hypoblast
       n : the inner germ layer that develops into the lining of the
           digestive and respiratory systems [syn: endoderm, entoderm,
            endoblast, entoblast]