100dictionary

100dictionary.com will automatically annotate new words (with phonetic transcription) on the English web pages or English texts you visit. The annotations are displayed next to the new words, and the font is smaller than the new words.

You can choose which words to annotate according to your needs, such as only annotating TOEFL vocabulary, or vocabulary with difficulty of GRE or above.

You can also add familiar words to your vocabulary so that other articles you visit will not annotate the words you know. As you visit more and more webpages, and the more perfect your vocabulary of familiar words, the new annotated pages will focus more on words you do n’t know. This can greatly speed up your efficiency in reading English articles.