Biology

Avian External Anatomical Terms
One-page summary of scientific terms describing avian anatomy.
http://www.ups.edu/x6263.xml

Bio-Society Glossary
By the European Commission. Defines a core of 800 technical and scientific concepts extracted from life sciences literature and other sources. For each term, main and alternative definitions, as well as their sources are provided.
http://ec.europa.eu/research/biosociety/library/glossaryfind_en.cfm

Biotechnology Terms
The online version of Technomic Publishing's Glossary of Biotechnology Terms by Kimball R. Nill. Search or browse.
http://biotechterms.org/sourcebook/index_kc.phtml

Bird Dictionary
Bird On! indexed dictionary of birdwatching terminology.
http://www.birdcare.com/bin/searchdict?pfx=A

Birds of Britain
Illustrated collection of terms and descriptions of birds found in British Isles.
http://www.birdsofbritain.co.uk/bird-guide/

Butterfly Glossary
Cross-referenced glossary of butterfly species with pictures.
http://www.enchantedlearning.com/subjects/butterfly/glossary/

Catalog of Fishes
Searchable database of taxonomic fish names. Accounts are provided for over 10,000 generic names and over 58,000 species. By the California Academy of Sciences.
http://research.calacademy.org/research/ichthyology/catalog/fishcatmain.asp

Cortland Herpetology Collection
One-page glossary of herpetology terms.
http://www.cortland.edu/herp/keys/glossary.htm

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.
http://www.mblab.gla.ac.uk/~julian/Dict.html

FishBase
Definitions of more than 1000 terms related to ichthyology, taxonomy, ecology, population dynamics, genetics, oceanography, geography and related disciplines.
http://www.fishbase.org/

Genetics Glossary
Glossary of genetic terminology maintained by the Rockefeller University.
http://linkage.rockefeller.edu/wli/glossary/genetics.html

Glossary of Avian Terms
United States Geological Survey glossary of avian terms.
http://www.npwrc.usgs.gov/resource/literatr/avian/avian.htm

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.
http://www.virtualmuseum.ca/Exhibitions/Birds/MMMN/English/glossary_data.html

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.
http://www.on.ec.gc.ca/community/classroom/millennium/m2-glossary-e.html

Glossary of Terms from "The Origin of Species"
Glossary of terms used in Darwin's "The Origin of Species".
http://www.literature.org/authors/darwin-charles/the-origin-of-species/glossary.html

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.
http://www.infovisual.info/

MAGUS: Multilingual Animal Glossary of Unveiled Synonyms
Dictionary of names of wild and domestic animals in 53 languages of Europe.
http://www.informatika.bf.uni-lj.si/magus.html

Microbiology Glossary
Glossary aiming at students of microbiology. Concise definition of technical terms. Includes a pronunciation guide.
http://highered.mcgraw-hill.com/sites/0072320419/student_view0/glossary_a-f.html#

Nomenclatural Glossary for Zoology
A glossary of terms which covers terminology commonly encountered within publications dealing with the systematics and nomenclature of animals.
http://www.biologybrowser.org/nomglos.html

Sharks Glossary
Glossary of types of sharks, related scientific terms with pictures for many entries.
http://www.zoomdinosaurs.com/subjects/sharks/glossary/

Spider Glossary
List of terms used in the study and description of spiders and their activities.
http://www.xs4all.nl/~ednieuw/Spiders/Spiderglossary.htm