psychiatric association American Psychological Association Trans abbreviations/terms/slang Julia's trans, gender, sexuality, & activism glossary! American Psychiatric Association http://www.isni.org/0000000121844411 https://en.wikipedia.org/wiki/American_Psychiatric_Association https://viaf.org/viaf/150684657/ https://www.wikidata.org/wiki/Q466524 APA The main professional organization of psychiatrists and trainee psychiatrists in the United States, and the largest psychiatric organization in the world. Its some 38,800 members are mainly American but some are international. The association publishes various journals and pamphlets, as well as the Diagnostic and Statistical Manual of Mental Disorders (DSM). The DSM codifies psychiatric conditions and is used worldwide as a guide for diagnosing disorders.