 
		
		Definition of dominant:
		
		
		(n) :
		
		the fifth major tone of a musical scale (five major steps above the note in question); thus G is the dominant of C, A of D, and so on; the 
triad built on the dominant tone
		
 
			
	
		
		
		(adj) :
		
		ruling; governing; prevailing; controlling; predominant; as, the dominant party, church, spirit, power