MEDIUM A PERSON CLAIMING TO BE IN CONTACT WITH THE SPIRITS OF THE DEAD AND TO COMMUNICATE BETWEEN THE DEAD AND THE LIVING. Mediums use the vibrations of the season--VIBRATION--frequently used common word, that refers to the steady rythmic, cyclic, movements of the atoms that never cease that are visibly engaged in making an object or a PHYSICAL BODY or invisibly making etheral substances. So each season of the year has its very own vibrations which Mediums can use to work