'Pinopsida' definitions:
Definition of 'Pinopsida'
(from WordNet)
noun
Most conifers: in some systems classified as a class (Pinopsida) and in others as a subdivision (Pinophytina); used in some classifications for one of five subdivisions of Gymnospermophyta [syn: Pinopsida, class Pinopsida, Pinophytina, subdivision Pinophytina]