Tooltip Dictionary is a free Chrome add-on developed by fadak. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This handy tool allows users to easily search for definitions and translations while browsing.

With Tooltip Dictionary, users can simply hover their cursor over an English word to instantly search for its definition. This feature eliminates the need to open a new tab or navigate away from the current page. Additionally, users can also utilize the translation function by highlighting an English sentence and dragging it. This makes it convenient for users who need quick translations without interrupting their browsing experience.

Overall, Tooltip Dictionary is a useful tool for those who frequently encounter unfamiliar English words while browsing. It provides a seamless and efficient way to access definitions and translations, enhancing the user's browsing experience.