Grade 10 prototype Get Printable Handwriting (pro-to-type) 3 syllables Rhymes Learn It! Spelling Test Definition noun. a person or thing that serves as an example of its kind; an original Example Sentence The prototype of the automobile actually did look like a horseless carriage. Synonyms original; example; ideal; mock-up Antonyms second geration Rhymes Three Syllable Rhymes (1) prototype Share with your friends: