operation
noun
op·er·a·tion
ˌä-pə-ˈrā-shən 
1
: performance of a practical work or of something involving the practical application of principles or processes
Practice until you can go through the whole operation without hesitation or thinking.
2
a
: an exertion of power or influence
the operation of a drug
b
: the quality or state of being functional or operative
The plant is now in operation.
c
: a method or manner of functioning
a machine of very simple operation
4
: a procedure performed on a living body usually with instruments especially for the repair of damage or defect or the restoration of health
needed an operation to remove his appendix
5
: any of various mathematical or logical processes (such as addition) of deriving one entity from others according to a rule
Multiplication is one mathematical operation.
6
a
: a usually military action, mission, or maneuver including its planning and execution
military operations for a large-scale invasion
b
operations plural
: the office on the flight line of an airfield where pilots file clearance for flights and where flying from the field is controlled
c
operations plural
: the agency of an organization charged with carrying on the principal planning and operating functions of a headquarters and its subordinate units
7
: a business transaction especially when speculative
continued his operations in cotton futures
8
: a single step performed by a computer in the execution of a program (see program entry 1 sense 6a)
9
: a usually small business or establishment
ran a struggling operation
Examples of operation in a Sentence
The family runs a small farming operation.
The company is a billion-dollar operation.
Recent Examples on the Web
On a remote asteroid mining operation, a grieving Mechanist gets a new companion and has a chance to avenge herself against the Shaper assassin who killed her husband.
—
Erik Kain, Forbes.com, 17 May 2025
Carlos Beltrán, who signed his own nine-figure deal with the Mets two decades before Soto, now works as a special assistant to David Stearns, the Mets’ president of baseball operations.
—Tyler Kepner, New York Times, 17 May 2025
Speigel projects Epic could draw as many as 8 million visitors during its first year of operation.
—Skyler Swisher, The Orlando Sentinel, 17 May 2025
On April 17 alone, DOGE staffers scheduled meetings with officials from the Truman Scholarship Foundation, the Denali Commission, the Office of Navajo and Hopi Indian Relocation and the U.S. Access Board, according to the two sources not authorized to speak about DOGE's operations.
—Stephen Fowler, NPR, 17 May 2025
See All Example Sentences for operation
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Erik Kain, Forbes.com, 17 May 2025
Carlos Beltrán, who signed his own nine-figure deal with the Mets two decades before Soto, now works as a special assistant to David Stearns, the Mets’ president of baseball operations.
—Tyler Kepner, New York Times, 17 May 2025
Speigel projects Epic could draw as many as 8 million visitors during its first year of operation.
—Skyler Swisher, The Orlando Sentinel, 17 May 2025
On April 17 alone, DOGE staffers scheduled meetings with officials from the Truman Scholarship Foundation, the Denali Commission, the Office of Navajo and Hopi Indian Relocation and the U.S. Access Board, according to the two sources not authorized to speak about DOGE's operations.
—Stephen Fowler, NPR, 17 May 2025
See All Example Sentences for operation
Cite this Entry
“Operation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/operation. Accessed 20 May. 2025.
Copy CitationKids Definition
operation
noun
op·er·a·tion
ˌäp-ə-ˈrā-shən
1
: the act, process, method, or result of operating
does the whole operation without stopping
the operation of a drug
2
: the quality or state of being able to work or function
put a factory into operation
3
: a procedure performed on a living body usually with medical instruments especially to restore health or repair damage or defect
4
: a mathematical or logical process (as addition or multiplication) for getting one mathematical expression from others according to a rule
5
: the process of putting military or naval forces into action
6
: a single step in a computer program
7
: a usually small business or establishment
Medical Definition
operation
noun
op·er·a·tion
ˌäp-ə-ˈrā-shən
: a procedure performed on a living body usually with instruments for the repair of damage or the restoration of health and especially one that involves incision, excision, or suturing
Love words? Need even more definitions?
Merriam-Webster unabridged
Share