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.
extensity. n. 1. (Psychology) psychol that part of sensory perception relating to the spatial aspect of objects. 2. the condition of being extensive or extended.. pl. exÂ·tenÂ·siÂ·ties. 1. a. The quality of having extension or being extensive. b. A specific degree or range of extension. 2.