1. The Aliasing effect is the appearance of jagged edges or “jaggies” in a rasterized image (an image rendered using pixels)

2. Aliasing (plural Aliasings) (signal processing, graphics, sound recording) Distortion caused by a low sampling rate, such as a moiré effect or jaggies.

3. The non-anti-Aliased examples break up curves into steps and jagged outcrops, sometimes called "the jaggies" or "pixelation"