胚はい珠しゅはいしゅMeanings1nounovulebotanyBotanical term for the structure in seed plants that develops into a seed after fertilization.被ひ子し植しょく物ぶつでは、胚はい珠しゅは子し房ぼうの中なかにある。In angiosperms, the ovule is inside the ovary.花か粉ふんが胚はい珠しゅに到とう達たつすると受じゅ精せいが起おこる。When pollen reaches the ovule, fertilization occurs.