aliasing

[ ey-lee-uh-sing ]
/ ˈeɪ li ə sɪŋ /

noun

a jagged, stairstep effect on curved or diagonal lines that are reproduced in low resolution, as on a computer printout or display.
Also called jaggies.
Compare antialiasing.

British Dictionary definitions for aliasing

aliasing
/ (ˈeɪlɪəsɪŋ) /

noun

radio television the error in a vision or sound signal arising from limitations in the system that generates or processes the signal

Scientific definitions for aliasing

aliasing
[ ālē-ə-sĭng ]

Jagged distortions in curves and diagonal lines in computer graphics caused by limited or diminished screen resolution. Compare antialiasing.
Distortion in a reproduced sound wave caused by a low sampling rate during the recording of the sound signal as digital information.