acotyledon / ˈeɪˌkɒt lˈid n, eɪˌkɒt- /

📖毕业后词汇根茎类植物子叶子叶植物橡树叶子

acotyledon 的定义

n. 名词 noun
  1. a plant without cotyledons, therefore one belonging to a group lower than the seed plants.