From Longman Dictionary of Contemporary Englishpocket-sizedˈpocket-sized, pocket-size adjective [usually before noun] British English small enough to fit into your pocket or be carried easily pocket-sized dictionaries
Examples from the Corpus
pocket-sized• The cassette-player was pocket-sized and dented where Pascoe had trodden on it.• This is a pocket-sized encyclopedia of biking information.• Standing between the high gray sky and the pocket-sized pool, I feel omnipotent.• The Olau Hollandia has a pocket-sized swimming-pool in the bowels, luxurious cabins aloft and couchette-style below.• And the latest clash of pocket-sized titans is Nintendo's GameBoy versus Atari's Lynx. 