An update to Instapaper for iPhone and iPad was released a few minutes ago in the App Store, and it adds a series of new features to the built-in offline dictionary that improve the efficiency of the “define” button during a reading session. First off, the design of the inline dictionary has been revamped to host more definitions, and interlinking between words. Everything’s faster, more compact, yet with more content than before. Thanks to a collaboration with Agile Tortoise, Instapaper’s dictionary can now also forward a definition directly to Terminology, which we’ve reviewed before. Terminology will automatically find the definition for the word you’ve selected, and show a button to go back to Instapaper thanks to the implementation of the the new x-callback-url draft standard. Handoff should also be supported in version 3.0.2.