a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body | the most important or interesting work or activity in a specific area or field |
(mathematics) calculation by mathematical methods | a judicial proceeding brought by one party against another; one party prosecutes another for a wrong done or for protection of a right or for prevention of a wrong |
activity by a military or naval force (as a maneuver or campaign) | something done (usually as opposed to something said) |
a planned activity involving many people performing various actions | a military engagement |
a process or series of acts especially of a practical or mechanical nature involved in a particular form of work | an act by a government body or supranational organization |
a business especially one run on a large scale | the operating part that transmits power to a mechanism |
the activity of operating something (a machine or business etc.) | In firearms terminology, the mechanism that handles the ammunition (loads, locks, fires, and extracts the cartridges). |
(psychology) the performance of some composite cognitive activity; an operation that affects mental contents | the trait of being active and energetic and forceful |
(computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction) | the series of events that form a plot |
process or manner of functioning or operating | a process existing in or produced by nature (rather than by the intent of human beings) |
the state of being in effect or being operative | the state of being active |