Which term describes a graphic made up of pixels?

A graphic made up of pixels is known as a bitmap image. This type of image is structured as a grid of individual pixels, each representing a specific color or shade. When you zoom in on a bitmap image, you can see the distinct squares that make up the whole picture, highlighting its pixel-based nature.

While raster images also refer to bitmap images, the term "bitmap" is the more specific descriptor regarding the individual pixel matrix, particularly in contexts where the pixel arrangement is consequential. Vector images, in contrast, are created using paths defined by mathematical expressions, and they do not rely on pixels, which allows them to scale without losing quality. "Graphical image," while a general term, does not specifically convey the pixel structure inherent to bitmap images.