What happened to English definitions for Japanese words?

I have an iPhone 4S. When I was using iOS 5.1.1 I was able to hold my finger on a Japanese word in an email message and buttons would pop up, one of which said "define." When I touched that button I would see the definition in English as well as in Japanese, and the correct pronounciation. Now that I have upgraded to iOS 6 I can only see the definition and pronounciation in Japanese, the English definition no longer appears. Do I need to change a setting to get the English defnitions turned back on? What happened to this incredibly useful feature??