'class Taxopsida' definitions:

Definition of 'class Taxopsida'

(from WordNet)
noun
Yews: in some systems classified as a class (Taxopsida) and in others as a subdivision (Taxophytina) used in some classifications for one of five subdivisions of Gymnospermophyta [syn: Taxopsida, class Taxopsida, Taxophytina, subdivision Taxophytina]