List of free dictionaries on-line

There are some web sites I usually use to learn english by myself.

They are real fun!

Enjoy

• http://www.thefreedictionary.com/ All in one
• http://dictionary.reference.com/ All in one
• http://www.ldoceonline.com/ The Longman Dictionary of Contemporary English Online
• http://www.howjsay.com/ A free online Talking Dictionary of English Pronunciation 
• http://wordia.com/ The authorative online textual dictionary. Bring words to life through video!