cotyledon
noun
cot·y·le·don ˌkä-tə-ˈlē-dᵊn 
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 (such as ferns) see seedling illustration
cotyledonary
ˌkä-tə-ˈlē-də-ˌner-ē
adjective 
Word History
Etymology
New Latin, from Greek kotylēdōn cup-shaped hollow, from kotylē cup, anything hollow
First Known Use
1540, in the meaning defined at sense 1
Kids Definition
cotyledon
noun
cot·y·le·don ˌkä-tə-ˈlē-dᵊn
: the first leaf or one of the first leaves of a plant which is usually folded within a seed until germination and which serves as a storehouse of food for the plant
Medical Definition
cotyledon
noun
cot·y·le·don ˌkät-ᵊl-ˈēd-ᵊn
1
: a lobule of a 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)
- somnific
- somniloquise
- somniloquised
- somniloquises
- somniloquising
- somniloquisms
- somniloquist
- somniloquists
- somniloquized
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- somniloquizing
- somniloquyes
- somniloquys
- Somniosus
- somnipathy
- somnivolency
- somnolence
- somnolences
- somnolencies
- somnolent
- somnolently
- somnorific
- somoni
- somraies
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