aliasing

noun
ali·as·ing | \ ˈā-lē-ə-siŋ , ˈāl-yə- \

Definition of aliasing 

: an error or distortion created in a digital image that usually appears as a jagged outline We commonly observe aliasing on television. This occurs when there is an insufficient magnification produced by the lens of a TV camera focused on periodic structures such as the pattern of pinstripes in an announcer's shirt, bricks in the wall of a house, or seats in an empty stadium. —Douglas B. Murphy, Fundamentals of Light Microscopy and Electronic Imaging, 2001

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First Known Use of aliasing

1977, in the meaning defined above

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The first known use of aliasing was in 1977

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