A bit map is a digital image format that stores graphics data in a mapped grid of pixels. However, there are various synonyms for this term that are commonly used in the tech industry. One of the most commonly used synonyms for bit map is raster graphic, which is derived from the fact that bit maps are stored as a series of pixels in a rectangular grid. Another synonym is pixel image, reflecting the fact that bit maps are made up of individual pixels. Additionally, you may hear the term bitmap image, which is simply another way of referring to this type of graphic format. Overall, regardless of the term used, bit maps are a crucial aspect of digital image storage and display.