Google announced they have redesigned and enhanced their dictionary results.
Google said you no longer have to type define or what is prior to your search to trigger a dictionary. Google added “implicit triggering” of the dictionary result, so for example, a search on [stupendous] shows a dictionary result at the top of the page:
The dictionary result also includes speech and pronunciation information and additional dictionary links to third-party sites. Plus, Google pushed this out to all global English users. There are more changed coming, including improvements to the mobile experience.