胚芽鞘 Traditional form: 胚芽鞘 Pinyin (reading): pēiyáqiào Definitions: coleoptile, protective sheath covering an emerging shoot (botany) Characters: 胚 - embryo; an unfinished thing 芽 - bud, shoot, sprout 鞘 - scabbard, sheath Traditional characters: 胚 - embryo; an unfinished thing 芽 - bud, shoot, sprout 鞘 - scabbard, sheath