Wikipedia
The firing order is the sequence of power delivery of each cylinder in a multi-cylinder reciprocating engine.
This is achieved by sparking of the spark plugs in a gasoline engine in the correct order, or by the sequence of fuel injection in a Diesel engine. When designing an engine, choosing an appropriate firing order is critical to minimizing vibration, to improve engine balance and achieving smooth running, for long engine fatigue life and user comfort, and heavily influences crankshaft design.
Usage examples of "firing order".
The last move before the rockets were in final firing order was to make the switches in both the propellant and destruction systems, but the switch for the latter that completed the circuit to the 60 Ib.
To do that, he'd have to have someone here to transmit a firing order, which would just happen to kill whoever transmitted it.
That means he'd have to get the firing order to his patsy by hypercom, and 'Hursag and Dahak are monitoring all hypercom traffic.
It was normal procedure to have the RPV evacuate the area just as soon as the firing order was given.
I came up with a solution: change the firing order of the batteries that engage us.
Only the trust which his old friend placed in his evaluation of the situation had enabled him to obtain the cancellation of the firing order.