'Arecidae' definitions:
Definition of 'Arecidae'
(from WordNet)
noun
One of four subclasses or superorder of Monocotyledones; comprises about 6400 species in 5 families of trees and shrubs and terrestrial herbs and a few free-floating aquatics including: Palmae; Araceae; Pandanaceae and Lemnaceae [syn: Arecidae, subclass Arecidae]