A rich snippet is an enhanced search result that includes additional visual elements beyond the standard title, URL, and description. These enhancements might include star ratings, product prices, recipe cooking times, event dates, FAQ accordions, or thumbnail images. Rich snippets are generated by search engines when they detect valid structured data on a page.
Rich snippets are powered by structured data markup, typically implemented using JSON-LD with Schema.org vocabulary. When Google's systems determine that a page's structured data is valid and the page meets quality guidelines, the search result may be enhanced with the additional information. Not all pages with structured data receive rich snippets; Google makes the final decision based on relevance and quality. Rich results books on Amazon explain eligibility criteria.
Rich snippets significantly impact click-through rates. Studies consistently show that search results with rich snippets receive more clicks than plain results, with some analyses reporting CTR improvements of 20 to 30 percent. The visual distinction makes the result stand out on the page and provides users with more information to assess relevance before clicking.
For glossary pages, the DefinedTerm structured data type can help search engines understand and potentially display term definitions directly in search results. SEO content strategy books on Amazon discuss optimization techniques.