Credo Literati Reference -- More than 500 online reference sources that are cross searchable. Includes images, maps, conversion calculator, and crossword search box.
Gale Virtual Reference -- GALE Virtual Reference Library provides you with a database of encyclopedias and specialized reference sources for multidisciplinary research. Full-text. Coverage varies.
InteliHealth.com - online medical term dictionary, sponsored by InteliHealth, an Aetna company.
MEDLINEplus Medical Encyclopedia - links to online medical dictionaries and lists of online medical dictionaries, produced by the National Library of Medicine.
MedicineNet.com - online medical term dictionary produced by MedicineNet, Inc., an online, healthcare media publishing company. MedicineNet is 100% Doctor produced.
Dr. Abel Scribe's Guide to AMA Medical Style - online help with citing resources based on the American Medical Association Manual of Style.