Pinopsida

1 definition found

From WordNet (r) 2.0 [wn]:

  Pinopsida
       n : 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: {class Pinopsida}, {Pinophytina},
            {subdivision Pinophytina}]