What does the term 'pixel' refer to in digital imaging?

The term 'pixel' refers specifically to the concept of "Picture Element." In digital imaging, a pixel is the smallest unit of a digital image or display that can be represented and manipulated. Each pixel contains information about color and brightness and, when combined with all the other pixels in an image, they create a complete picture. This terminology is fundamental in understanding how digital images are composed and displayed on screens, as well as how they are manipulated in photo editing software. The term encapsulates both the visual representation and the technical elements that contribute to digital imaging.