Necessity, understood as a logical or other philosophical principle, or as a law or force of nature.
The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
The method or practice by which actions are done.
A procedure for generating a value from one or more other values (the operands);
A military campaign (e.g. Operation Desert Storm)
A planned undertaking.
A business or organization.
a function which maps zero or more (but typically two) operands to a single output value.
The method by which a device performs its function.
A surgical procedure.