Dear Y. Adi, The may not give you all the answers, but if you have can access PubMed you will find that Medical Subject Headings (MeSH) are briefly explained (usually) in the scope notes, e.g. 'Cot Death' at http://www.ncbi.nlm.nih.gov:80/entrez/meshbrowser.cgi?retrievestring=&mbdeta il=n&term=cot+death <http://www.ncbi.nlm.nih.gov:80/entrez/meshbrowser.cgi?retrievestring=&mbdet ail=n&term=cot+death> There are also numerous medical dictionaries on the Web, a list of some can be found e.g. at http://www.sciencekomm.at/advice/dict.html#med <http://www.sciencekomm.at/advice/dict.html#med> Best wishes, Reinhard Wentz -----Original Message----- From: yaser adi [mailto:[log in to unmask]] Sent: 13 August 2001 12:29 To: [log in to unmask] Subject: electronic source of medical definition Dear List members, I wonder if any one would know about an electronic source that provides full medical definitions, I do not mean ICD-10 or DSM-IV. Many thanks Y.Adi