cotyledon

名词 n.
中文释义
英 /ˌkɒt.ɪˈliː.dən/    美 /ˌkɑt.əˈliː.dən/

英文释义

名词 n.
  1. Each of the patches of villi on the foetal chorion in the placenta of ruminants and some other mammals.
    — Forced to apply animal findings to humans, his human womb also had cotyledons like a dog's.
  2. The leaf of the embryo of a seed-bearing plant; after germination it becomes the first leaves of the seedling.

词形变化

cotyledons plural

词汇关系

衍生词
acotyledon coconut cotyledon cotyledonal cotyledonary cotyledonoid cotyledonous dicotyledon epicotyl hypocotyl microcotyledon monocotyledon polycotyledon tricotyledon

词源

From Latin cotylēdōn, from Ancient Greek κοτυληδών (kotulēdṓn, “cup-shaped cavity”), from κοτύλη (kotúlē, “cup”).
0 次浏览 数据来源: Wiktionary