SAT Dictionary 1
the author of this app says:
Trying to improve your vocabulary? Maybe you're studying for the SATs. This application might do the trick as long as you have ThinkDB to view it.
Take this application with you on the bus or during a long trip, and study up on words that might be on the test! When you see a word you'd like more information on, just tap on the word, and a definition screen will be displayed. The definition screen offers the definition of and synonyms for the word.