Marijuana, or marihuana, is a name for the cannabis plant, and more specifically, a drug preparation from it.[1][2][3] "Marijuana" as a term varies in usage, definition and legal application around the world.[4] Some jurisdictions define "marijuana" as the whole cannabis plant or any part of it,[5] while others refer to "marijuana" as a portion of the cannabis plant that contains high levels of tetrahydrocannabinol (THC).[6] Some jurisdictions recognize "marijuana" as a distinctive strain of cannabis, the other being hemp.[7] For legal, research and statistical reference, "marijuana" generally refers to only the dried leaves and flowering tops (herbal cannabis), with by-products such as hashish or hash oil being uniquely defined and regulated.[8][9][10][11] The form "marihuana" is first attested in Mexican Spanish; it then spread to other varieties of Spanish and to English, French, and other languages.[12][13]
^Reprinted from Journal of the American Medical Association 201 (August 7, 1967): 368-71 (2012). "DEPENDENCE ON CANNABIS (MARIHUANA)". Drugtext.org. Archived from the original on October 17, 2014. Retrieved January 30, 2016.{{cite web}}: CS1 maint: numeric names: authors list (link)