n.
Pronunciation: ˌ kä-t ə - ' l ē -d ə n
Function: noun
Etymology: New Latin, from Greek kotyl ē d ō n cup-shaped hollow, from kotyl ē cup, anything hollow
Date: 1540
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 \ - ' l ē -d ə - ˌ ner- ē \ adjective