Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
pocket-size is an adjective meaning "relatively moderate, limited, or small". It carries 2 recorded senses.
relatively moderate, limited, or small
“a small business”
“a newspaper with a modest circulation”
“small-scale plans”
“a pocket-size country”
small enough to be carried in a garment pocket
“pocket-size paperbacks”
Definitions, synonyms and semantic relations for pocket-size come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.