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

A commodity offered for sale.

Any preparation to be applied to the hair, skin, nails, etc.

Anything that is produced; a result.

* (John Milton) (1608-1674)

the product of those ill-mated marriages.

* (Edmund Burke) (1729-1797)

These institutions are the products of enthusiasm.

*{{quote-magazine, date=2014-06-21, volume=411, issue=8892, magazine=(The Economist)

, title=[http://www.economist.com/news/books-and-arts/21604535-real-sir-isaac-newton-was-not-first-king-reason-last Magician’s brain] , passage=The truth is that [Isaac] Newton was very much a product of his time. The colossus of science was not the first king of reason, Keynes wrote after reading Newton’s unpublished manuscripts. Instead “he was the last of the magicians”.}}

# The amount of an artifact that has been created by someone or some process.

# A consequence of someone's efforts or of a particular set of circumstances.

# (label) A chemical substance formed as a result of a chemical reaction.

# (arithmetic) A quantity obtained by multiplication of two or more numbers.

# (label) Any operation or a result thereof which generalises multiplication of numbers, like the multiplicative operation in a ring, product of types or a categorical product.

# Any tangible or intangible good or service that is a result of a process and that is intended for delivery to a customer or end user.

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Illegal drugs, especially cocaine, when viewed as a commodity.