coleoptile
英 [,kɒlɪ'ɒptaɪl]
美 [,kolɪ'ɑptɪl]
词性
名词
基本解释
n.[植]胚芽鞘
网络释义
an embryonic leaf in seed plants, occurring as a protective sheath covering the young shoot tip before it emerges from the soil.
例证
The coleoptile protects the shoot as it pushes through the soil surface during germination.