surgical operation, surgical procedure, surgical process, surgery, operation - a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; they will schedule the operation as soon as an operating room is available; he died while undergoing surgery.
A quarter mile is, by definition, a fourth of a mile. It is 1,320 feet or 402.3 meters. On a standard-sized Olympic track, it is a little more than a single lap.
One mile consists of 5,280 feet. The foot and the mile are units of length in the Imperial system of measurement, which is the system used mostly in the United States. One foot equals 12 inches, and 3 feet equal 1 yard.