Dicotyledonae \Dicotyledonae\ n. (Bot.) a class of plants comprising those seed plants that produce an embryo with two cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae.

Syn: Dicotyledones, class Dicotyledones, class Dicotyledonae, Magnoliopsida, class Magnoliopsida. [WordNet 1.5]

Source: The Collaborative International Dictionary of English v.0.48
 

Caryophyllidae \Caryophyllidae\ n. a group of families of mostly flowers having basal or free-central placentation and trinucleate pollen (binucleate pollen is commoner in flowering plants); it contains 14 families including: Caryophyllaceae (carnations and pinks); Aizoaceae; Amaranthaceae; Batidaceae; Chenopodiaceae; Cactaceae (order Opuntiales); Nyctaginaceae; Phytolaccaceae; it corresponds approximately to order Caryophyllales; it is sometimes classified as a superorder.

Syn: subclass Caryophyllidae. [WordNet 1.5]

Source: The Collaborative International Dictionary of English v.0.48
 

Caryophyllidae

Source: WordNet (r) 2.0