There are two ways to use Online English to Persian (Farsi) dictionary via Pars Dictionary:
Simplest way is to select "Dictionary" from "Online Services" menu or click here . You will redirect to dictionary page. You can enter your phrase in that page and send it for dictionary. To see the result of dictionary, your should install Persian (Farsi) font. You should read "How to install Persian Farsi) font" .
Another way to use Pars Dictionary services is downloading Pars Translator Client (Click here to download). With this software , you are able to enter your words to see the meanings. You have your own Dictionary . When you are not connected to Internet, you are able to see your previous result .