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English definition of “megapixel”

megapixel

noun [C]     /ˈmeɡəˌpɪksəl/
IT a unit used to measure how clear the image is on a television, computer, etc. screen, equal to one million pixels: The higher the number of megapixels used by a digital camera, the sharper your pictures will be.
(Definition of megapixel noun from the Cambridge Business English Dictionary © Cambridge University Press)
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