Meaning of BITMAP in English
Most pictures you see on your computer, including the ones found on the Internet, are composed of bitmaps. A bitmap is a really just a map of dots (or bits, hence the name) that looks like a picture as long as you're not like 2 inches from the screen. Common bitmap filetypes include BMP, JPEG, GIF, PICT, PCX, and TIFF. Because bitmap images are made up of a bunch of dots, if you zoom in on a bitmap, it gets all blocky. Vector graphics (created in programs such as Freehand, Illustrator, or CorelDraw) scale up much better without getting blocky.
English glossary of computer and Internet terms. Английский глоссарий компьютерных и Интернет терминов. 2012