Grade 7 calculator Get Printable Handwriting (cal-cu-la-tor) 4 syllables Rhymes Learn It! Spelling Test Definition noun. a mechanical or electronic device for the automatic performance of mathematical operations Example Sentence He used a calculator to add the long list of numbers. Synonyms machine; device; computer Antonyms fingers; abacus Rhymes Four Syllable Rhymes (1) calculator Share with your friends: