Render

1. In general, the term render refers to the process of taking a computer image or file and converting it into another format and/or applying graphic modifications, such as shading or shadows, to that image.
2. When referring to 3D animation, the term render refers to the process of taking a computer generated image and performing complicated operations that make that image appear as a 3D image and/or taking a series of images and making them animated. 

Also see: 3-D, Computer Graphics, Video definitions