Definition of "pixel"

pixel

/ˈpɪksəl/

noun
plural pixels
1. One of the tiny dots that make up the representation of an image in a computer's memory.
  Quotations
  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.
  1965 April, Fred C. Billingsley, “Digital Video Processing at JPL”, in Eugene B. Turner, editor, Electronic Imaging Techniques I, Proceedings of SPIE, volume 3, Los Angeles
  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.
  2015 August, Dominik Guggisberg et al., “Mechanism and control of the eye formation in cheese”, in International Dairy Journal‎, volume 47, Elsevier, pages 118–127
2. One of the squares that make up a pixel art work or a zoomed in image in a computer.
verb
third-person singular simple present pixels, present participle pixeling or pixelling, simple past and past participle pixeled or pixelled
1. To create computer graphics by editing individual pixels.
  Quotations
  Whether he's pixeling for cellphones or PCs, here is one artist who has a unique and imaginative vision.
  2006, NFGMan, Character Design for Mobile Devices, page 110