Focus on the pronunciation of operating cost
› (also operating expense) a cost relating to producing a company's goods or services: cut/increase/reduce operating costs The company plans to cut operating costs by £1.2bn a year. Operating costs for marketing were incorporated into overall sales figures.
› a cost involved in using a machine, piece of equipment, building, etc.: high/low operating costs The floodlight uses one of the most common lamp series in use, for greater availability at lower operating costs.