Word Discoverer: Expand your vocabulary Chrome Extension

 Word Discoverer highlights rare English dictionary words, idioms and proverbs on web pages. 
It helps non-native English learners to discover new expressions while they are browsing the Internet. 
Highlighting of rare words is useful because some people do not even notice vaguely known words, especially when these words are not critical for understanding of the text that they read. One possible explanation of this strange and pertexing effect is that mind of a reader is concentrated on understanding the meaning and structure of the text, and after finishing reading a sentence many readers wont go back to check the meaning of unfamiliar words that they have already forgot. E.g. some readers will forget to check the definition of word 'pertexing' from the previous sentence which, in fact, doesnt exist. And even if you did check it, you still can try this extension, it highlights only real English dictionary words and idioms =) 

*NOTE* On installation Words Discoverer shows scary warning that it can 'read and change all you data on the websites your visit' - dont worry, Words Discoverer will not send any of your data anywhere. In fact it doesnt even talk to any servers, all highlighting logic is performed locally in your browser, so if you have some saved html files to read, you can even use Words Discoverer offline. The source code is here if you are curious: https://github.com/mechatroner/aided_reading

Words Discoverer is free forever, open source, and it has no ads.

Here are some features of the extension:

Words Discoverer is better than 'Word-of-the-day' type of programs because new words are highlighted in context of the text that you read, which is a good motivating factor to finally check the definitions and learn these words (or idioms).

Depending on your vocabulary size, you can adjust frequency threshold of highlighted words e.g. skip 25% most common English words, and highlight all the rest. Theres no way to set such threshold for idioms and proverbs, the extension can either highlight all of them or none.  

Words Discoverer can operate in two modes:
In the first (default) mode it highlight all Internet pages except sites that you add to a special list. E.g. you may not want to highlight anything from youtube.
In the second mode Words Discoverer highlights only sites from another special list - your favorite English sites. By default this list is empty, so unless you add there something (e.g. facebook, wikipedia, bbc.com), it wont highlight anything at all.

Currently there are ~50K words and ~1600 idioms in the extensions dictionary. If youre interested you can look at them on projects github page. 
Here some example of idioms from the dictionary: 'brand new'(everyone knows this one), 'bucket list', 'moral high ground', 'baby shower'(it is not a shower for babies), 'money laundering', 'jigsaw puzzle', 'veil of ignorance'. And there are many others.

If you known definition of a highlighted word, you can add it to your personal vocabulary and it wont be detected any more. When you add a word it is converted to normal form for your vocabulary e.g. 'dogs -> dog'. You can always view your vocabulary or save it as a text file.

By selecting text of a word (or idiom) and right clicking on it you can either add the word to your vocabulary or view its definition in one of 4 online dictionaries using context menu references. And, of course, you can also use Words Discoverer in combination with your favorite dictionary app (e.g. 'Google dictionary' extension)

Interesting fact: most adult native English speakers know 20000-35000 words, so it is totally possible to eventually add them all to your vocabulary file.

Contributors:
github user XQDD - Text-To-Speech idea and implementation

How to install Word Discoverer: Expand your vocabulary chrome extension in chrome Browser

You can Follow the below Step By Step procedure to install the Word Discoverer: Expand your vocabulary Chrome Extension to your Chrome Web browser.

• Step 1: Go to the Chrome webstore https://chrome.google.com/webstore or download the extension Word Discoverer: Expand your vocabulary Chrome Extension Download from https://pluginsaddonsextensions.com
• Step 2: Now search for the Word Discoverer: Expand your vocabulary in Chrome Webstore Search and click on the search button.
• Step 3: click on the Word Discoverer: Expand your vocabulary Chrome Extension Link
• Step 4: in the next page click on the Add to Chrome button to Download and Install the Word Discoverer: Expand your vocabulary extension for your Chrome Web browser .