What's: Pixel
Abbreviation for picture element. Images displayed on a monitor consist of individual pixel. Pixel is commonly abbreviated with "px", for example "800 x 600 px" The higher the number of pixel, the better the quality but also the bigger the filesize. By enlarging a picture with the help of image editing software, individual pixel can be identified and edited.
Pixel im deutschen Lexikon
Pixel in het nederlandse encyclopedie