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.
diligence-a diligent effort; it is a job requiring serious application. application. elbow grease, exertion, effort, travail, sweat-use of physical or mental energy; hard work; he got an A for effort; they managed only with great exertion.etermination, purpose-the quality of being determined to do or achieve something; firmness of purpose; his determination showed in his every movement; he is a man of purpose. assiduity, assiduousness, concentration-great and constant diligence and attention.