derived from the Greek word tereo, τηρέω (to preserve; to guard ; to note (a prophecy; figuratively, to fulfil a command); by implication, to detain (in custody; figuratively, to maintain); by extension, to withhold (for personal ends; figuratively, to keep unmarried); by extension, to withhold (for personal ends; figuratively, to keep unmarried))

derived from the Greek word ouron, οὖρον (urine)

derived from the New Latin word ureter (ureter; urinary duct)