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.
A quarter mile is exactly 80 rods long, and so farmers could use this measurement to determine how many fence posts they needed. When homesteaders settled in Nebraska, each one received one quarter section, or 160 acres.