Young Epidemiology Scholars glossary (link)
Medical Billing and Coding Online - Epidemiology Glossary and Resources (link)
CDC Excite! Glossary of epidemiology terms(link)
University of Washington Department of Medicine, Advanced Physical Diagnosis - Epidemiology glossary (link)
LSU Law Center's
Medical and Public Health Law Site Epidemiology glossary (link)
Clinical Epidemiology & Evidence-Based Medicine Glossary (also has a list of other glossaries) (link)