The Collaborative International Dictionary of English v.0.48:

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]

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]

WordNet (r) 3.0 (2006):

Caryophyllidae
    n 1: a group of families of mostly flowers having basal or
         central placentation and trinucleate pollen (binucleate
         pollen is commoner in flowering plants); contains 14
         families including: Caryophyllaceae (carnations and pinks);
         Aizoaceae; Amaranthaceae; Batidaceae; Chenopodiaceae;
         Cactaceae (order Opuntiales); Nyctaginaceae;
         Phytolaccaceae; corresponds approximately to order
         Caryophyllales; sometimes classified as a superorder [syn:
         Caryophyllidae, subclass Caryophyllidae]