Word Study
    
                                	substract |
                                	substraction |
                                	substractor |
                                	substrate |
                                	substratum |
                                substring
                                	| substruct 
                                	| substruction 
                                	| substructure 
                                	| substylar 
                                	| substyle 
                            
        substring
WORDNET DICTIONARY
Noun substring has 1 sense
            For further exploring for "substring" in Webster Dictionary Online
        

