n, pl  mediums  or  me*dia   1  :  a means of effecting or conveying something: as  a  :  a substance regarded as the means of transmission of a force or effect  b  :  a surrounding or enveloping substance  2  pl  media  a  :  a nutrient system for the artificial cultivation of cells or organisms and esp. bacteria  b  :  a fluid or solid in which organic structures are placed (as for preservation or mounting) .
 
 
 
Similar sounding terms:  MDMA 
 
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