endosperm
noun [ U ] biology specialized uk/ˈen.dəʊ.spɜːm/ us/ˈen.doʊ.spɝːm/
胚乳(植物种子内包裹胚芽并在其发育过程中为其提供养分的物质)
the substance inside a plant seed that surrounds and provides food for the embryo as it develops
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