The comprehensive and appreciated Merriam-Webster dictionary is now available in an official iPad optimized app for free. The iPad app, built upon their iPhone app, has been redesigned to take advantage of the iPad’s screen and brings a few new features.

The main new feature is a scrolling index which, when the iPad is orientated in landscape, appears on the left of the screen, and lets you scroll the entire dictionary in alphabetical order. It is largely pointless, but pretty cool – did you know the word turmeric is the immediate word before turmoil in the dictionary?

Just like the iPhone app it has voice search powered by Nuance, synonyms and antonym support, audio pronunciations, example history and pretty much everything else that a dictionary app needs. The app does have banner ads at the bottom of the screen, but they are fairly unobtrusive and considering you get an entire dictionary for free, it is well worth it.