Dots Per Inch (DPI)
Definition - What does Dots Per Inch (DPI) mean?
If an image is not of adequately high quality, it may not be able to be resized or printed without a loss of resolution.
Techopedia explains Dots Per Inch (DPI)
Some who deal with dot-per-inch or pixel-per-inch measurements also make the distinction that these measurements must be applied to all stages of image production, from capturing the image with a camera, to the production of a print or digital image.