1570s, from medical Latin ureter, from Greek oureter, from ourein "to urinate," from ouron (see urine).
ureter u·re·ter (yu-rē'tər, yur'ĭ-tər)
n.
The long narrow duct that conveys urine from the kidney to the urinary bladder.
The tubes that carry urine from each kidney to the urinary bladder.