Online Dictionaries

http://www.m-w.com
Merriam-Webster Medical Dictionary
 
http://www.stedmans.com
Medical speller

http://www.acronymfinder.com
Acronym/abbreviation finder

http://www.researchandrescue.com/research/acronyms.htm
Acronyms and abbreviations by topic/subject.

http://www.dreamsoft.com/shay/Cites.htm:
Citation tips for legal secretaries

http://www.refdesk.com:
Very complete Reference Desk/Library