英语词汇perisperm怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	perisperm
释义	perisperm /ˈperɪspɜːm/ noun Botany (in some seeds) a mass of nutritive material outside the embryo sac 【植】（某些种子的）外胚乳。词源 early 19th cent.: from PERI-'around' + Greek sperma 'seed'.
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