YellowBridge Chinese/English Online Dictionary

YellowBridge- is a well organized, online dictionary that offers several nice features.  First off, the basic services are free.  This includes audio files that allow you to listen to the word's pronunciation, information on the character’s radical/etymology, and the stroke order for writing the character.  Each entry also has a short list of phrases/compound words that start or end with the target character, which is very nice if you can only remember part of a word or phrase.

Entries can be viewed in either their simplified or traditional forms.  There are several methods to looking up an entry:

• English input,
• Pinyin input,
• Type Chinese characters (simplified or traditional), and
• Draw Chinese characters using a Java program.  This function is not accessible via the web on your iPad.  However, you can get around this by activating the iPad keyboard named "Chinese-Traditional:  Handwriting" or "Chinese-Simplified:  Handwriting."  Check out this blog to find out how to do this in just a few easy steps.

There are also two alternative method for looking up entries, which are based on the root radical. 

• Select a radical (simplified or traditional) and also the number of additional strokes.  The dictionary will provide you with a list of characters (based on the 4,000 most common characters) that fit your criteria.
• The pool of entries that the dictionary pulls from (X number of common characters) can be increased by purchasing membership. 
• If you remember part of a character such as the character's structure and one of the component pieces, the dictionary will provide you with a list of characters (based on the 500 most common characters) that fit your criteria. 
• The pool of entries that the dictionary pulls from (X number of common characters) can be increased by purchasing membership.  

Input using 注音符號(ㄅㄆㄇㄈ) is not available, but YellowBridge offers you a great conversion chart.