cotyledon
cot·y·le·don
noun \ˌkä-tə-ˈlē-dən\Definition of COTYLEDON
1
: a lobule of the mammalian placenta
2
: the first leaf or one of the first pair or whorl of leaves developed by the embryo of a seed plant or of some lower plants (as ferns)
— cot·y·le·don·ary \-ˈlē-də-ˌner-ē\ adjective
See Origin of COTYLEDON
New Latin, from Greek kotylēdōn cup-shaped hollow, from kotylē cup, anything hollow
First Known Use: 1540
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