From Longman Dictionary of Contemporary Englishpocket calculatorˌpocket ˈcalculator noun [countable] TDa small piece of electronic equipment that you use to do calculations
Examples from the Corpus
pocket calculator• Multiply the length by 2.7 using a pocket calculator and that gives the number of needles to use for seaming.• A pocket calculator will do most of the work.• Out comes my pocket calculator to work out if I have an exact number of repeats.• Then I pulled out my pocket calculator.• It occupied an entire building and was similar in capacity to the programmable pocket calculator that one now buys at the stationers.• Sir Clive, 51, also invented the pocket calculator, home computer and the digital watch.• The appeal has been shamelessly to the pocket calculator, not the heart; to the purse, not to pride. 