What does odo mean on a 2001 Toyota Celica gt instrumen?

On a 2001 Toyota Celica GT, "ODO" stands for the odometer, which measures the total distance the vehicle has traveled since it was manufactured. This reading is typically displayed on the instrument cluster and can help owners track mileage for maintenance and service intervals. The odometer can be reset for trip tracking purposes, often indicated by a separate "trip" counter.