2D animation

or 2-D an·i·ma·tion

[too-dee an-uh-mey-shuh n]
noun
  1. two-dimensional animation: animation, or a product of animation, created when two-dimensional images are rapidly sequenced to create the illusion of lifelike motion, as in traditional drawn animation, cel animation, or computer-generated vector graphics.

Origin of 2D animation

First recorded in 1985–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018