operation

noun

1.
the state of being in effect or being operative
Derived from:
operate
2.
a business especially one run on a large scale
Derived from:
operate
3.
a planned activity involving many people performing various actions
yieldcraft
4.
(computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)
5.
activity by a military or naval force (as a maneuver or campaign)
reys military operation
Derived from:
operate
6.
a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
surgery surgical operation surgical procedure surgical process
Derived from:
operate operative
7.
a process or series of acts especially of a practical or mechanical nature involved in a particular form of work
procedure
Derived from:
operate
8.
process or manner of functioning or operating
functioning performance
Derived from:
operate
9.
(psychology) the performance of some composite cognitive activity; an operation that affects mental contents
cognitive operation cognitive process mental process process
10.
11.
the activity of operating something (a machine or business etc.)
werk
Derived from:
operate