pix, + element; often taken to be a blend of “picture” and “element”. The x stems from the abbreviation pics being sometimes also written as pix, which has been in use since the 1880s. First attested in 1965.
{{cite-book
|year=2006
|month=January
|author=Richard F. Lyons
|title=IS&T/SPIE Symposium on Electronic Imaging
|chapter=A Brief History of ‘Pixel’
|location=San Jose
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