pocket-size

or pock·et-sized

[ pok-it-sahyz ]
/ ˈpɒk ɪtˌsaɪz /

adjective

small enough to fit conveniently into one's pocket.

Origin of pocket-size

First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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