meaning of appreciation
1.  A just valuation or estimate of merit, worth, weight, etc. ; recognition of excellence. 
2.  Accurate perception; true estimation; as, an appreciation of the difficulties before us; an appreciation of colors. 
3.  A rise in value; -- opposed to depreciation. 
4.  an increase in price or value; "an appreciation of 30% in the value of real 
						">estate"
						 
