| Avian External Anatomical Terms: One-page summary of scientific terms describing avian anatomy. |
| Bio Tech's Life Science Dictionary: Contains terms associated with genetics, biochemistry, biotechnology, botany, chemistry, ecology, pharmacology, toxicology and medicine. Searchable by term or definition. |
| Bio-Society Glossary: By the European Commission. About 800 technical and scientific concepts from the fields of life sciences, biotechnlology, agriculture, and ecology. |
| Biotechnology Terms: The online version of Technomic Publishing's Glossary of Biotechnology Terms by Kimball R. Nill. Search or browse. |
| Bird Dictionary: Bird On! indexed dictionary of birdwatching terminology. |
| Birds of Britain: Illustrated collection of terms and descriptions of birds found in British Isles. |
| Butterfly Glossary: Cross-referenced glossary of butterfly species with pictures. |
| Cortland Herpetology Collection: One-page glossary of herpetology terms. |
| Dictionary of Cell Biology: Intended to provide quick access to easily-understood and cross-referenced definitions of terms . Features a graphical interface. Full access requires registration. |
| Fish Species Catalog: Searchable catalogue of nearly 54,000 individual fish species and their synonyms maintained by the California Academy of Sciences. |
| FishBase: Definitions of more than 1000 terms related to ichthyology, taxonomy, ecology, population dynamics, genetics, oceanography, geography and related disciplines. |
| Fungal Glossary: Glossary of fungal types with detailed descriptions and cross-references. |
| Genetics Glossary: Glossary of genetic terminology maintained by the Rockefeller University. |
| Glossary of Avian Terms: United States Geological Survey glossary of avian terms. |
| Glossary of Ornithology Terms: Illustrated single-page document by the Manitoba Museum of Man and Nature, Canada, on the physiology, taxonomy, and study of birds. A parallel version exists in French. |
| Glossary of Terms for Exotic Invaders: Single-page parallel documents in English and French about nuisance species in the Great Lakes, by Environment Canada. Zoology, botany, aquatic ecology. |
| Glossary of Terms from "The Origin of Species": Glossary of terms used in Darwin's "The Origin of Species". |
| InfoVisual: Thematic visual dictionary by Bernard Déry, to learn by way of image. Concise definitions within the fields of vegetal biology, animal biology, and human anatomy. |
| MAGUS: Multilingual Animal Glossary of Unveiled Synonyms: Dictionary of names of wild and domestic animals in 53 languages of Europe. |
| Sharks: Glossary of types of sharks, related scientific terms with pictures for many entries. |
| Sounds of the World's Animals: Words for the sounds that animals make in many different languages. |
| Spider Glossary: List of terms used in the study and description of spiders and their activities. |
| Zoology Nomenclatural Terms: Glossary of terminology commonly encountered within publications dealing with the systematics and nomenclature of animals. |
Classical
