The Merriam-Webster Dictionary API gives developers access to a comprehensive resource of dictionary and thesaurus content as well as specialized medical, Spanish, ESL, and student-friendly vocabulary. Make your applications better by integrating our authoritative definitions, etymologies, audio pronunciations, synonyms and antonyms, and more. Merriam-Webster has been producing language information including dictionaries, thesauri, and translation materials for over 150 years. The Merriam-Webster collection of APIs provide developer access to a variety of the company's most prominent reference works. Free access is provided to non-commercial websites and applications. Free access is limited to two reference works with a maximum of 1000 queries a day per reference work. Full access is available for commercial use.