柯林斯词典endosperm /ˈɛndəʊˌspɜːm/ 1. N the tissue within the seed of a flowering plant that surrounds and nourishes the developing embryo 胚乳 返回 endosperm剑桥词典the substance inside a plant seed that surrounds and provides food for the embryo as it develops 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） 返回 endosperm