3D animation refers to the process of taking digital objects and making them come to life by creating the illusion that they're moving through a three-dimensional space. These computer-generated objects appear on a two-dimensional screen, but they're crafted to mimic the principles of a 3D world.

3D Animation Explanation and Examples :

Some popular 3D animations include: Pixar (Toy Story, Frozen, The Incredibles) Dreamworks (Shrek, How to Train Your Dragon) Feature Film CGI (the dinosaurs in Jurassic Park, the robots in Transformers, pretty much everything in Avatar)