MEDICAL DICTIONARY:

CancerWEB's Online Medical Dictionary

MEDICAL JOURNALS:

Free Medical Journals
RTportal.com
New England Journal of Medicine
MedBioWorld ("25,000 links to journals, associations and databases”)
Otolaryngology - Head and Neck Surgery
PubMed “PubMed, a service of the National Library of Medicine, provides access to over 11 million MEDLINE citations back to the mid-1960's and additional life science journals. PubMed includes links to many sites providing full text articles and other related resources.”
The Lancet