cotyledon
noun
cot·y·le·don
ˌkä-tə-ˈlē-dᵊn
plural cotyledons
1
: the first leaf or one of the first pair or whorl of leaves developed by the embryo of a seed plant see seedling illustration
2
: a small lobe of the mammalian placenta that facilitates the delivery of oxygen and nutrients to the fetus
Cite this Entry
“Cotyledon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cotyledon. Accessed 30 Mar. 2025.
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