In digital images, the term "pixel" refers to the smallest unit of a digital image that can be displayed or processed. Pixels are the building blocks of a digital image, where each pixel represents a specific color value at a defined grid coordinate. The total number of pixels in an image—in terms of width and height—determines its resolution, impacting the image’s clarity and detail. Higher resolution images have more pixels, resulting in greater fidelity and sharpness when viewed on various devices.