Definition of Niobeum	
	    			    		
		    		Ni*o"bi*um (?), n. [NL., fr. L. & E.
Niobe.] (Chem.) A later name of columbium. See
Columbium. 
  
		    		 - Webster's Unabridged Dictionary (1913) 
		    		 
		    			    		
		    		-  a metallic chemical element (symbol Nb) with an atomic number of 41.
 
 
  
		    		 - The Nuttall Encyclopedia 
		    		 
		    		    			
	    			 
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		    		The correct Spelling of this word is: Niobium 
		    		    	 
	    	
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