impression(In printing and print-making, the impression of a block, plate, or type, etc., on a sheet of paper); printing(Any of various means of reproducing identical copies of graphic matter in a fixed form); imprint; print; printout
impression(An ad that is served to a user's screen either as a pushed (sent by e-mail) or pulled ad (requested by a user's browser). This includes measurement of responses from an ad delivery system to a user's browser)