To gradually increase your vocabulary, LingoZING! allows you to look up individual words you encounter during reading on the spot. Both a dictionary and a synonyms are available. While having a bubble text displayed in Title Reader mode simply tap and hold on a word in either the Primary or the Secondary Language bubble. The word will be selected with a command option such as “Define”. Tapping on this command the corresponding dictionary entry will be opened in a separate white bubble, through which you can scroll.
The dictionary is provided courtesy of Wictionary https://www.wiktionary.org/