(Virtual Reality Modeling Language) A 3D graphics language used on the Web. After downloading a VRML page, its contents can be viewed, rotated and manipulated. Simulated rooms can be "walked into." The VRML viewer is launched from within the Web browser. The first VRML viewer was WebSpace from SGI, whose Open Inventor graphics library was the basis for developing VRML. Cosmo Player, WorldView and Cortona are other popular Windows viewers, and Octaga and FreeWRL are well known Mac viewers.