noun · the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxesoperating expenseoperating costbudget items
noun · (computer science) the processing time required by a device prior to the execution of a commandcommand processing overhead timecommand processing overheadcommand overhead
noun · (computer science) the disk space required for information that is not data but is used for location and timingdisk overhead
noun · a transparency for use with an overhead projectorviewgraph
noun · a hard return hitting the tennis ball above your head