definition of
operating

[1] #1 operating a. involved in a kind of operation; "the operating conditions of the oxidation pond". wn

[2] #2 operating s. [operational, in operation] being in effect or operation; "de facto apartheid is still operational even in the 'new' African nations"- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions". wn