Rhinoceros is primarily a free form surface modeler that utilizes the NURBS mathematical model. Rhinoceros' application architecture and open SDK makes it modular and enables the user to customize the interface and create custom commands and menus.
Noun. 1. exigency-a pressing or urgent situation; the health-care exigency. crisis-an unstable situation of extreme danger or difficulty; they went bankrupt during the economic crisis.
Definition of expediency. plural. expediencies. 1 : the quality or state of being suited to the end in view : suitability, fitness. 2 obsolete a : haste, dispatchb : an enterprise requiring haste or caution. 3 : adherence to expedient means and methods put more emphasis on expediency than on principle â W. H. Jones.