[ an-tee-ey-lee-uh-sing, an-tahy‐ ]
/ ˌæn tiˈeɪ li ə sɪŋ, ˌæn taɪ‐ /

noun Computers.

a technique for smoothing out jagged lines in digital graphical output.
Compare aliasing.

Origin of antialiasing

First recorded in 1990–95; anti- + aliasing Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for antialiasing

[ ăn′tē-ālē-ə-sĭng, ăn′tī- ]

In computer graphics, a software process for removing or reducing the jagged distortions in curves and diagonal lines so that the lines appear smooth or smoother.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.