Tubercule
L. tuber = a knot or collection, and -culum = a diminutive suffix.
Tuberosity
L. tuber = knob or localized collection, and -osity = condition.
Uncus
L. uncus = a hook. Applied to several hook-shaped structures in the brain.
Ursodeoxycholic acid
L. urso = bear. The active ingredient in Ursodiol (ursodeoxycholic acid) was first found in bear bile. source
Ursodeoxycholic acid
L. ursidae = bears (taxonomical family) Ursodeoxycholic acid is a bile acid found in the bile of bears (Ursidae) as a conjugate with taurine. Used therapeutically, it prevents the synthesis…
Uterus
L. uterus = womb. Its relationship to uter = bag of goat skin, has been suggested.