英和和英

語源

From Latin cotylēdōn, from Ancient Greek κοτυληδών (kotulēdṓn, “cup-shaped cavity”), from κοτύλη (kotúlē, “cup”).

発音

• (英国発音) IPA: /ˌkɒt.ɪˈliː.dən/
• (General American) IPA: /ˌkɑt.əˈliː.dən/
• 韻: -iːdən

名詞

cotyledon (plural cotyledons)

1. (physiology) Each of the patches of villi on the foetal chorion in the placenta of ruminants and some other mammals.
   • 1997, Roy Porter, The Greatest Benefit to Mankind, Folio Society, published 2016, page 72:

     Forced to apply animal findings to humans, his human womb also had cotyledons like a dog's.

2. (botany) The leaf of the embryo of a seed-bearing plant; after germination it becomes the first leaves of the seedling.

同意語

(botany): seed leaf

派生語