The meaning of OPERATION is performance of a practical work or of something involving the practical application of principles or processes. How to use operation in a sentence.

Operation definition: an act or instance, process, or manner of functioning or operating.. See examples of OPERATION used in a sentence.

OPERATION definition: 1. the fact of operating or being active: 2. the way that parts of a machine or system work…. Learn more.

17 hours ago · The Department of Homeland Security (DHS) announced the arrests of more than 150 illegal alien sex offenders during a major enforcement surge across the state of Florida. …

9 hours ago · Defense Secretary Pete Hegseth announced on Thursday evening a new operation dubbed “Southern Spear” to quash “narco-terrorists” in the Western hemisphere. Hegseth said …

Definition of operation noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Operation can refer to medical surgery, a military campaign, or mathematical methods, such as multiplication and division. Operation comes from the Latin word opus (“work”) and can refer to …

7 hours ago · US Defence Secretary Pete Hegseth on Thursday announced a new military mission, "Operation Southern Spear," aimed at targeting what he called "narco-terrorists" …

Nov 6, 2025 · operation (countable and uncountable, plural operations) (uncountable) The method by which a device performs its function.

7 hours ago · War Secretary Pete Hegseth announced the commencement of Operation Southern Spear on Thursday evening, an operation he said is aimed at protecting the Western …