PROGRESSIVITY
    
Meaning of PROGRESSIVITY in English
	
Pronunciation: ˌ pr ō -( ˌ )gre- ' si-v ə -t ē
 Function: noun
 Date: 1883
: the quality or state of being a progressive tax
	
	
	Merriam Webster Collegiate English Dictionary.
    	Merriam Webster - Энциклопедический словарь английского языка.
	2012