СУМ-11 is a browser add-on for Chrome that provides users with access to the Словник української мови (СУМ-11) website. This add-on allows users to easily search for Ukrainian words and their meanings directly from their browser. By clicking on the extension icon, a pop-up window appears where users can either enter a word in Ukrainian and click "Search" or simply highlight a word on the page they are currently on.

One of the main advantages of СУМ-11 is its user-friendly interface and seamless integration with the Chrome browser. With just a few clicks, users can quickly search for the meaning of any Ukrainian word they come across while browsing the web. This add-on is a valuable tool for anyone who wants to enhance their Ukrainian language skills or simply wants to have quick access to a reliable Ukrainian dictionary while using Chrome.