The American Geological Institute’s (AGI) Glossary of Geology, 5th Edition, is now available for the iPhone, iPod Touch and iPad in Apple’s App Store. The Glossary of Geology app brings 40,000 authoritative definitions of the vocabulary of the geosciences to a convenient, searchable, fast and portable format.

Users can learn the difference between look-alike pairs, such as sylvanite (a mineral) and sylvinite (a rock); the origin of terms; the meaning of abbreviations and acronyms common in the geosciences; the dates many terms were first used; the meaning of certain prefixes; and the preferred term of two or more synonyms. The glossary app enables users to both browse and search the entire glossary. In addition, the app is self-contained so there is no need to be online to use this product. The app requires an iPhone, iPod Touch, or iPad running iOS 3.2 or later and is compatible on iPhone 4.  In addition, the iPad version is optimized for the larger visual experience of that device.