[ur-] or uro- comb form [NL, fr. Gk our-, ouro-, fr. ouron urine, fr. ourein to urinate--more at urine] 1: urine "uric"
2: urinary tract "urology"
3: urinary and "urogenital"
4: urea "uracil"
[2]ur- or uro- comb form [NL, fr. Gk our-, ouro-, fr. oura tail--more at ass]: tail "uropod" [3]ur- prefix, often cap [G, fr. OHG ir-, ur- thoroughly (perfective prefix)--more at abide] 1: original: primitive "ur-form"
2: original version of "urtext"
3: prototypical: arch- "ur-anticommunist"