Vocabla

It lets your international visitors translate English words using double click. 
8 languages are covered: Spanish, Portuguese, Chinese, Arabic, Russian, Turkish, Vietnamese, Polish. 
Other users get English definition.
After installation no additional setup is required. It just works:
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<li>Box with one line instruction for users is presented below every post title:</li>
</ol>
“New English word? Translate any word using double click.”
<ol>
<li>
When user double-clicks on an English word in your article, he gets word translation in his browser’s language or an English definition.
</li>
<li>
That’s all! More international visitors can understand articles from your website 🙂
</li>
</ol>
<h3>Loading JS from http://vocabla.com</h3>
To provide the best service of translation, we need to communicate with Vocabla servers where we keep the translation data and audio for the translated words.
<h3>Arbitrary section</h3>

Translate English Words by Vocabla

It lets your international visitors translate English words using double click.

Chris Roberts

Glossy provides an easy way to insert predefined text for use throughout your site. If Tippy is installed, definitions can show via a tooltip. Provides an easy way to specify if tooltips should show in a tooltip or inline by default. Also provides a shortcode attribute for changing the inline setting on a per-term basis.
Glossy adds the shortcodes gs and glossy. For example:
[gs NYSE] – this is the quick way. 
[glossy term=”NYSE”] – a longer form, does the same as [gs NYSE]
You can also specify the inline attribute:
[glossy term=”NYSE” inline=”false”] – show the definition in a tooltip 
[glossy term=”NYSE” inline=”true”] – show the definition in the body of your post content. 
[gs inline=”true” nyse] – Same as above.
Terms are defined in the WordPress dashboard and can be used throughout your site.
The tooltip is created by the Tippy plugin, so showing definitions in a tooltip requires Tippy in order to work.
If you want to create a page that shows visitors an index of all your Glossy entries, use the [glossyindex] shortcode. Just insert [glossyindex] into any post or page and it will take care of the rest. By default, it shows a header with an index of first characters. You can turn it off by using [glossyindex header=”off”]

Glossy

Glossy allows you to define information text that can be used throughout your site with a simple shortcode.

Translate English Words by Vocabla vs Glossy