General Science and Technology: Dictionaries

Definitions of more than 400 terms related coal mining, some with links to photographs.

Definitions of more than 500 terms related to geology.

Definitions for more than 375 technical terms used in geology.

Definitions of more than 800 terms, which conform to current usage in the geological sciences.

This glossary from the U.S. Geological Survey's Earthquake Hazards Program contains nearly 200 earthquake-related terms. Each term is linked to a page containing much additional information including illustrations.

A glossary providing the vocabulary necessary to understand the modern glacier environment. Each term contains one or more photographs.

Includes more than 4600 entries, many with photographs and citations for further reading.

Detailed descriptions of more than 80 volcano related terms with photographs and links to related information.

More than 500 terms related to volcanoes and volcanism developed by the U.S. Geological Survey. Some terms have links for further information.

A large and comprehensive dictionary of acronyms, abbreviations, and initialisms.