Somonator

With this plugin you can create a simple dictionary to your site.

Terms Dictionary

Create a dictionary to your site in a couple of clicks.

beedictionary

Quick Dictionary Meaning from BeeDictionary.com creates a small temporary popup for difficult and confusing words. A reader can check the meaning without opening a dictonary or going to other sites.
It has a database of more than 3000 difficult and commonly confused errors. It identifies those words and create a small popup on hovering these words.
<h3>More information</h3>
For more information visit the Bee English Dictionary website at http://www.beedictionary.com/ or write to 
bd.support [AT] beedictionary.com for comments and support.
<h3>License</h3>
Copyright 2015 Bee Dictionary (email : bd.support [AT] beedictionary.com)
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation; either version 2 of the License, or 
(at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Quick English Dictionary Meaning

Works with 4.8

Not sure whether it is appropriate to use a specific word in your blog. This plugin from BeeDictionary.com identifies difficult and confusing words an …

Terms Dictionary vs Quick English Dictionary Meaning