: any of a class or subclass (Magnoliopsida or Dicotyledoneae) of angiospermous plants that produce an embryo with two cotyledons and usually have floral organs arranged in cycles of four or five and leaves with reticulate venation
called alsodicot
compare monocotyledon
dicotyledonous
ˌdī-ˌkä-tə-ˈlē-də-nəs
adjective
Word History
Etymology
New Latin
First Known Use
1725, in the meaning defined above
Kids Definition
dicotyledon
noun
di·cot·y·le·don ˌdī-ˌkä-tə-ˈlē-dᵊn
: a flowering plant (as an oak or bean plant) having an embryo with two cotyledons