pixel

American  

[pik-suhl, -sel] / ˈpɪk səl, -sɛl /

noun

Computers, Television.

• pixels
  plural

1. the smallest element of an image that can be individually processed in a video display system.

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pixel British  

/ ˈpɪksəl /

noun

1. any of a number of very small picture elements that make up a picture, as on a visual display unit

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pixel Scientific  

/ pĭk′səl /

1. The most basic unit of an image displayed on a computer or television screen or on a printer. Pixels are generally arranged in rows and columns; a given combination among the pixels of various brightness and color values forms an image.

2. ◆ A subpixel is one of three components of a pixel used in the representation of a color image. Each subpixel represents the contribution of a single color—red, green, or blue—to the overall color and brightness of the pixel.

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Closer Look

The images on a computer screen are composed of tiny dots called pixels (short for picture element). The computer controls each pixel individually. Most monitors have hundreds of thousands, or often millions, of pixels that are lit or dimmed to create an image. Each pixel of a color screen is made out of one red, one blue, and one green subpixel, generally arranged in a triangle, adjusted individually to create the combined effect of a single color but treated as a unit pixel for determining resolution. Pixels vary in size according to the size and resolution of the monitor. Smaller pixels provide higher resolution, and therefore sharper images, but require more memory to store the color and intensity data of each pixel and more processing time to refresh the screen. Resolution is frequently referred to in terms of dpi, or dots per inch.

Other Word Forms

Noun Inflected Forms

• pixels
  plural

Etymology

Origin of pixel

1965–70; pix ² (in the sense “pictures”) + el(ement)

Explanation

A pixel is one of the small dots or squares that make up an image on a computer screen. The more pixels there are, the more the image looks real or accurate. Any digital image is made up of pixels, and when someone talks about the resolution of a computer monitor or TV screen, they're referring to the number of pixels. Older televisions have around 300,000 pixels, but new high-definition TVs can have more than two million pixels, which produces a very sharp, clear image. The word pixel came from pictures, or pics, and element, and was coined in 1969.

Example Sentences

See Examples For:

pixel pixels

The scientists used NIRSpec's Integral Field Unit, an instrument that records both an image and a spectrum for every pixel.

From Science Daily ● Jul. 23, 2026

The research team used a method called pixel cross-correlation to examine the video frame by frame and measure how the ground shifted.

From Science Daily ● Mar. 27, 2026

The Manchester LHCb team designed and built essential parts of the upgraded tracking system, including silicon pixel detector modules assembled in the University's Schuster Building.

From Science Daily ● Mar. 19, 2026

While often in a retro pixel art style, at times the game shifted into a more modern open-world look.

From Los Angeles Times ● Feb. 10, 2026

Node:pixel sort, Next:pizza box, Previous:pistol, Up:= P = pixel sort n.

From The Jargon File, Version 4.2.2, 20 Aug 2000 by Guy L. Steele

"People always think it's crazy that you travel all over just to catch some pixels," she laughs.

From BBC ● Jul. 13, 2026

Skeletor is all pixels with a clattering jaw perfect for chewing the scenery.

From Los Angeles Times ● Jun. 3, 2026

GPUs, with their parallel processing capabilities, could render vast swaths of pixels far better than central processing units, which can only carry out tasks sequentially.

From MarketWatch ● May 23, 2026

But he’s not alone in keeping detailed written records and committing his stray thoughts to paper—or pixels.

From The Wall Street Journal ● May 9, 2026

Miguel’s knight took a pitchfork in the butt and wilted into a heap of pixels.

From "Mr. Lemoncello's Library Olympics" by Chris Grabenstein