胚はい乳にゅうはいにゅうFreq.FrequencyTop 100,000Meanings1nounendosperm; albumenbotanyBotanical term for the nutrient-rich tissue inside a seed that feeds the developing embryo.胚はい乳にゅうは種しゅ子しの発はつ芽がに必ひつ要ような養よう分ぶんを蓄たくわえている。The endosperm stores nutrients necessary for seed germination.