胚乳 はいにゅう Meanings Noun albumen (of a seed, esp. the endosperm) Kanji 胚 embryo. Read as ハイ. 乳 milk. Read as ニュウ. Words containing 胚乳 内胚乳 (ないはいにゅう) endosperm Word lists Botany Jinuma: Japanese Dictionary · Word lists