WordWeb Online

1. Activity by a military or naval force (as a manoeuvre or campaign)
   "it was a joint op of the navy and air force"
   - operation, military operation
    
2. A medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
   "they will schedule the op as soon as an operating room is available"
   - operation, surgery, surgical operation, surgical procedure, surgical process

Derived forms: ops

Type of: activity, medical procedure

Encyclopedia: Op