Answer: operation

AnswerCrossword Clue
OPERATIONMilitary procedure
operationAn activity in which such an organization is involved
operationPreceding a code name for such an activity
operationAn act of surgery performed on a patient
operationthe act of operating
operationA piece of organized and concerted activity involving a number of people, esp. members of the armed forces or the police
operationThe fact or condition of functioning or being active
operationA process in which a number, quantity, expression, etc., is altered or manipulated according to formal rules, such as those of addition, multiplication, and differentiation
operationAn active process; a discharge of a function
operationA business organization; a company
OPERATIONFace lift, for example
OPERATIONAppendectomy, for one
OPERATIONWork on a table
OPERATIONOverlord, e.g.
OPERATIOND-day's ... Overlord
OPERATIONMilitary maneuver
OPERATION... Overlord.
OPERATIONMilitarily speaking, a campaign.
OPERATIONA strategic project.
OPERATION... Vittles.
OPERATIONMilitary action.
OPERATIONWorking.
OPERATIONGame in which the puzzle's long answers are pieces
OPERATIONMathematical process