operating
/ˈä-pə-ˌrā-tiŋ/
adjective
of, relating to, or used for or in operations
operating expenses
verb
to perform a function : exert power or influence
to produce an appropriate effect
to perform an operation or a series of operations
factors operating against our success
noun
software that controls the operation of a computer and directs the processing of programs (as by assigning storage space in memory and controlling input and output functions)