A plant of the subfamily Prunoideae (also called Amygdaloideae) (family Rosaceae), comprising flowering plants and trees and including the plum and almond.
rare Designating or relating to a type of radiolarian (of the order Spumellaria) having a skeleton in the form of an ellipsoidal lattice (formerly classified in a suborder Prunoidea).
Of or relating to the subfamily Prunoideae (family Rosaceae) of flowering plants and trees.
Late 19th century (in an earlier sense). From classical Latin prūnum plum + -oid.