Glossary of Geology, 6th Edition
The Glossary of Geology, 6th Edition, is new for 2026 and the most comprehensive reference tool of its kind in the geosciences. With over 58,000 detailed definitions covering the geoscientific disciplines from geology and geophysics, to mining, energy, minerals, and even climate, it's a critical resource for anyone seeking to understand geoscience language. Evolving over 6 editions with contributions from hundreds of geoscientists, the Glossary is the definitive reference.
Annual Individual Subscription Price: $25.00
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- Subscriptions are annual. AGI does not automatically renew subscriptions; you will be sent a renewal 30 days prior to expiration.
- Access to the Glossary of Geology is provided via a secure login.
- This subscription is for individual use only. Institutional access is available separately.
Who needs the Glossary of Geology?
The glossary is the critical reference for:
- Students
- Researchers
- Editors and writers
- Legal professionals
- Business and government leadership
Product Details:
- More than 58,000 terms with full definitions
- Copy/paste direct from the glossary to use in documents.
- All ongoing updates included during active subscriptions.
The online Glossary provides access to the more than 58,000 glossary entries contained in the Sixth Edition of the Glossary. 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 geoscience vocabulary; the dates many terms were first used; the meaning of certain prefixes; and the preferred term of two or more synonyms.
Kindle eBook
THe Kindle version of the Sixth Edition is coming in 2026. Until then, the Fifth Edition remains available.
Please note: Initial search indexing by your e-reader may take up to a day to complete. This is a one-time cataloging of the e-book that will occur as a background process, and make future searches occur more quickly. For the first 24 hours, search results may be incomplete.
Hardcopy
A 2-volume print version of the Sixth Edition is planned to be released later in 2026.
Institutional Subscriptions Price
The online Glossary is an annual subscription and the rate is based on users. For a quote on institutional subscriptions, or to inquire about site-wide licensing, please email jr@americangeosciences.org. Access is provided by IP address authentication.