pixel

noun

1. One of the tiny dots that make up the representation of an image in a computer's memory.

   “We have chosen to sample at a 500 KC rate and we define each one of these samples as a picture element or pixel. We have sampled each pixel with 6-bit accuracy which is commensurate with the signal/noise ratio and the data accuracy.”

   “In the tomographic images of the 30-day-old cheeses, the gantry had to be removed with image processing techniques: first, the binarised image (grey level larger than 10⁴) was eroded with a disk of three pixels.”

2. One of the squares that make up a work of pixel art or a zoomed-in image in a computer.
3. A unit of measure used in screen displays, resolutions, and similar visual media that represents either linear measure or area.

verb

1. To create computer graphics by editing individual pixels.

   “Whether he's pixeling for cellphones or PCs, here is one artist who has a unique and imaginative vision.”