Dictionaries

Science Dictionaries and Glossaries 

Academic Press Dictionary of Science and Technology   
Agriculture Glossary   
Animal Anatomy Dictionary   
Aquatic, Wetland and Invasive Plant Glossary  
Atmospheric Chemistry Air Quality Glossary   
Australian Flora Glossary  
Avian Terms
Biochemistry Glossary   
Bioinorganic Chemistry Glossary   
Biological Chemistry Glossary   
Bioremediation Glossary
BioTech's Life Science Dictionary   
Biotechnology and Food Glossary   
Biotechnology and Environmental Dictionary    
Biotechnology and Agriculture
Botany Encyclopedia of Plants and Botanical Dictionary.   
Botanical Terms (1)
Botanical Terms (2)
Cell Biology
Chemical Elements.com - An Interactive Periodic Table of the Elements   
Chemical Engineering Glossary   
Classification of Living Things: Glossary of Terms   
Cytokines
Dairy Terms
Dictionary of Botanical Epithets   
Dictionary of Carnivorous Plant Names   
Dictionary of Cell and Molecular Biology   
Encyclopedia of Biomedical Sciences   
Encyclopedia.com from Electric Library   
Encyclopedia of Genes and Genomes   
Environmental Contaminants Encyclopedia   
Environmental Terms
Ethnobotanical Dictionary   
Fish Terminology   
Food Irradiation Glossary   
Food Label Glossary   
Food Safety Terms
Food Science Dictionary   
Food-Related Health Terms   
Forest Genetics Glossary   
ForestWeb Wood Glossary   
Forestry
Fungal Glossary   
General Chemistry Online Glossary   
Genetics Glossary   
Genetic Terms
Glossary and Classification of Roses   
Glossary of Agriculture   
Glossary of Biochemistry and Molecular Biology   
Glossary of Class Names of Organic Compounds   
Glossary of Common Tree Diseases   
Glossary of Coral Marine Life Terms   
Glossary of Crop Science Terms   
Glossary of Fisheries Terms   
Glossary of Forestry Terms   
Glossary of Fungal Names and Synonyms   
Glossary of Gene Technology in the Food Chain   
Glossary of Genetic Terms   
Glossary of Herbs and Aromas
Glossary of Marine Biology   
Glossary of Medical, Statistical, and Clinical Research Terminology   
Glossary of Medicinal Chemistry   
Glossary of Microbiology Terms   
Glossary of Orchid Terminology   
Glossary of Physical Organic Chemistry   
Glossary of Plant Pathology   
Glossary of Pollen and Spore Terminology   
Glossary of Roots of Botanical Names   
Glossary of Toxic Substances and Diseases   
Glossary of Virology   
Herbal Dictionary   
Herbal Encyclopedia   
Horticulture Glossary   
Life Science Dictionary (from Biotech)
Marine Biology
Mushroom Dictionary   
Nutritional Terminology
Pest Management
Plant Dictionary   
Plant Encyclopedia   
Plant Pathology
Pollution Glossary   
Rose Glossary   
Soil Microbiology Terms   
Soil Science
Water (quality)
Water-Science
Water Words

Some Other Dictionaries to Peruse

Astrophysics
Earth Science
GIS
Jargon from Hackers
Mathematics
Photonics
Science Terms
Scientific Quotations
Space Science
Useful Research Phrases (Humor)
Weather Dictionary