Configure gnome dictionary for offline use

The inbuilt gnome-dictionary in Ubuntu queries online dictionary servers like dict.org when we type a word.
You can configure this dictionary to use the local dictionary server in your computer.It helps to use dictionary while offline and to save bandwidth while online.

Steps:
1. Install dictd server:
dictd is a server that allows a client to access dictionary definitions from a set of natural language dictionary databases.See Wikipedia article.

2. Download different dictionary databases:
For English language dict-wn and dict-gcide are the recommended dictionary databases for English.These can be installed through synaptic.You can search for other free dictionaries packed in .deb (dict-) packages through synaptic.

3. Configure settings of gnome-dictionary:
Applications > Dictionary
Edit > Preferences
Add a new dictionary source with Hostname as "localhost" instead of "dict.org".Now if the list in Dictionaries tab is refreshed, you can see the available databases.Select the new source and use it.