Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The basic unit of the composition of an image on a television screen, computer monitor, or similar display.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One of the tiny dots that make up the representation of an image in a computer's memory.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot)

Etymologies

pix1 + el(ement).
(American Heritage® Dictionary of the English Language, Fourth Edition)
pix, pictures + el(ement); often taken to be a blend of “picture” and “element”, but this does not account for the x. First attested 1965 (Wiktionary)

Examples

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