Noun

(en noun)

The method by which a device performs its function.

It is dangerous to look at the beam of a laser while it is in operation .

The method or practice by which actions are done.

The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.

* John Locke

The pain and sickness caused by manna are the effects of its operation on the stomach.

* Dryden

Speculative painting, without the assistance of manual operation , can never attain to perfection.

A planned undertaking.

The police ran an operation to get vagrants off the streets.

The ''Katrina'' relief operation was considered botched.

A business or organization.

We run our operation from a storefront.

They run a multinational produce-supply operation .

(medicine) a surgical procedure.

She had an operation to remove her appendix.

(computing, logic, mathematics) a procedure for generating a value from one or more other values (the operands).

(military) a military campaign (e.g. )

(obsolete) Effect produced; influence.

* Fuller

The bards had great operation on the vulgar.

Noun

(head)

.

(plurale tantum) A mechanism or machine; the means by which something happens.

(plurale tantum) A factory or factories, or similar collection(s) of buildings.

*, chapter=22

, title= The Mirror and the Lamp , passage=In the autumn there was a row at some cement works about the unskilled labour men. A union had just been started for them and all but a few joined. One of these blacklegs was laid for by a picket and knocked out of time.}}

Everything or everything that is available or possible; especially, all available toppings on food.

Drastic treatment; abuse; the axe (dismissal).

(plurale tantum) Acts associated with moral or religious standing.