earth science
general
Volcanic and Geologic TermsVolcano World, University of North Dakota
Seismology GlossarySouthern California Earthquake Data Center
Glossary of Climate TermsCalSpace
Water Science Glossary of TermsUSGS Water Science for Schools
Oilfield GlossarySchlumberger
Internet Glossary of Soil Science TermsSoil Science Society of America
University of California Museum of Paleontology (UCMP) GlossaryTerms for "biologists and paleontologists in various fields." University of California Berkeley
CORSSA GlossaryA few technical terms, related but not limited to seismologyCommunity Online Resource for Statistical Seismicity Analysis
Swiss Federal Institute of Technology Zurich
Swiss Federal Institute of Technology Zurich
oceans
general
Glossary of Physical Oceanography and Related DisciplinesStephen K. Baum, Texas A&M University
Glossary of Coastal TerminologyCoastal & Hydraulics Laboratory, US Army Corps of Engineers
weather and climate
general
Glossary of MeteorologyAmerican Meteological Society
Climate and Weather Terms GlossaryWestern Regional Climate Center at the Desert Research Institute, NOAA
JetStream: GlossaryNational Weather Service Online School for Weather, NOAA
technology
general
GIS DictionaryGIS Lounge
computing
general
general dictionaries
general
WordNet"WordNet® is an online lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory. English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept. Different relations link the synonym sets."George A. Miller, Cognitive Science Laboratory, Princeton University
Oxford English Dictionary OnlineUCSD and subscriber access only.