imaginal disc pattern formation dorsal/ventral pattern formation, imaginal disc biological_process GO:0007450 dorsoventral pattern formation, imaginal disc The establishment, maintenance and elaboration of the dorsal/ventral axis of the imaginal disc. Imaginal disks are masses of hypodermic cells, carried by the larvae of some insects after leaving the egg, from which masses the wings and legs of the adult are subsequently formed. dorsal-ventral pattern formation, imaginal disc dorsal/ventral pattern formation