plural pixels
1
: any of the small discrete elements that together constitute an image (as on a television or digital screen)
… the number of pixels determines how sharp and realistic the image looks.—Leslie Meredith
2
: any of the detecting elements of a solid-state optical sensor (such as a CCD or CMOS device)
The team used a new CCD detector that has an 8,192 by 8,192 pixel array, which makes it the world's largest astronomical CCD.—Astronomy
the … CMOS image sensor provides a 9-µm pixel size …—Mathew Dirjish

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Is it pixelated or pixilated?

Pixelated is used to describe digital images in which individual pixels are discernable, as when you look closely at a large photo and can see the tiny dots that make up the image. Pixilated (coined from pixie, a pixie being a cheerful, mischievous sprite) is usually used to describe things considered whimsical, or people who seem dazed or lost in thought. While pixelated is a late 20th century coinage, pixilated has been in use since the mid-19th century.

Examples of pixel in a Sentence

Recent Examples on the Web
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Some units also show lines of dead pixels following the crease from the top to the area where the bright lines begin. — Ryan Whitwam, ArsTechnica, 27 Oct. 2026 For instance, in 1970 the mathematician John Conway introduced the Game of Life, where an elementary set of rules governing the movement of pixels on a screen leads to remarkably rich ecosystems. — Noah Giansiracusa, Time, 26 Oct. 2026 As with nearly all current 4K room-to-room projectors, the N3 Ultimate uses a 1,920-by-1,080-pixel DLP chip and TI's fast-switch pixel shifting to put a 3,840-by-2,160-pixel image on the screen. — M. David Stone, PC Magazine, 24 Oct. 2026 Instead, like just about every phone camera from the last few years, Oppo is taking advantage of pixel-binning, which combines multiple nearby pixels into one. — Dominic Preston, The Verge, 22 Oct. 2026 See All Example Sentences for pixel

Word History

Etymology

pix + element

First Known Use

1965, in the meaning defined at sense 1

Time Traveler
The first known use of pixel was in 1965

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Cite this Entry

“Pixel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pixel. Accessed 1 Nov. 2026.

Kids Definition

pixel

noun
: any of the small elements that together make up an image (as on a television screen) or sensor (as in a camera)
Etymology

from pix, an altered form of pictures, and element

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