magnoliidae: a group of families of trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plants; contains 36 families including Magnoliaceae and Ranunculaceae; sometimes classified as a superorder
class: (biology) a taxonomic group containing one or more orders
bit: a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states