3D rendering is the 3D computer graphics process of automatically converting 3D wire frame models into 2D images with 3D photorealistic effects on a computer. wikipedia.org

3D modeling (also known as meshing) is the process of developing a mathematical representation of any three-dimensional surface of object (either inanimate or living) via specialized software. wikipedia.org

Geomagic is a software development company focused on 3D software and technology for design and engineering. wikipedia.org

3D printing is a phrase used to describe the process of creating three dimensional objects from digital file using a materials printer, in a manner similar to printing images on paper. wikipedia.org

3D scanning involves using a 3D scanner to analyze a real-world object or environment to collect data on its shape and possibly its appearance (i.e. color). The collected data can then be used to construct digital three-dimensional models. wikipedia.org

Geomagic Design X (formerly Rapidform XOR), a reverse engineering software, combines history-based CAD with 3D scan data processing so user can create feature-based, editable solid models compatible with existing CAD software.

Reverse engineering is the process of discovering the technological principles of a device, object, or system through analysis of its structure, function, and operation. wikipedia.org