is the basic unit of a CCD chip which accumulates charge depending upon the amount of light falling upon it. A typical CCD chip has over 300,000 pixels.
Short for pixel element. A pixel is the smallest part of an image on a computer screen or on the sensor of a digital camera. An image is made up of a grid of pixels.
Refers to a "picture element." A discrete unit capable of displaying a color or intensity different from those around it. LCD screens are an example of a pixel based display; many are 1280 pixels across and 720 pixels tall.
The smallest addressable unit on a display screen. The higher the pixel resolution (the more rows and columns of pixels), the more information can be displayed. Source: TechWeb.com