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)
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)