Professor Word is a neat tool that can help students learn new SAT and ACT vocabulary words. Professor Word operates as a browser bookmarklet in Chrome, Firefox, Internet Explorer, and Safari. With Professor Word installed in your browser whenever you're reading a webpage you can click on the Professor Word bookmarklet to quickly identify SAT and ACT vocabulary words on that page. You can also use Professor Word to get definitions for any unfamiliar word on a webpage. To get a definition just highlight the word and a small dialogue box containing the definition will appear. In the video below I offer a short demonstration of how to use Professor Word.