Different authorities have defined the 
       term "cost 
       accounting" which help in reflecting the multi-sided meaning the 
       subject  contains. The definition given by J. W. Neuner is 
       considered more satisfactory and concise which is as following:
"Cost accounting is an expanded phase of 
    the general or financial accounting of a business concern which provides
    
    management promptly with the cost of producing or selling each article 
    or of rendering a particular service". In other words, cost accounting is a 
    step further to and a refinement of financial accounting. in which cost of 
    manufacturing and selling each product or job or rendering service is 
    determined, not at the time of accounting period but at the time when the 
    product is manufactured or any service is rendered. In simple words, costing 
    is a systematic procedure for determining the unit cost of output produced 
    or services rendered. It provides for an analysis of the expenditure which 
    enables the
    
    management to know not only the total cost but also its constituents.
In short, cost accounting is the process of 
    accounting for cost, which begins with regarding and classifying of incomes 
    and expenditures and ends with the preparation of periodical statements and 
    reports for ascertaining and controlling costs.
    As predicted today, cost accounting may be 
    defined as the process of measuring, analyzing, computing, and reporting the 
    cost, profitability and performance of operations.