U´rinary Bladder, n. A certain compartment of the cloaca, in some birds, is so named.
U´rine, n. Liquid excretion of the kidneys, in birds voided more or less mixed with the fæces.
Uro-gen´ital or Gen´ito-u´rinary, a. Said of organs common to the two offices implied in the words, or of such organs regarded as associate parts.
Urohy´al, n. Median backward process of the hyoid bone.
Uropyg´ium, n. Rump. (60.)
U´terus, n. Womb. Wanting in birds; but a lower tract of the oviduct where the eggshell is formed has been loosely so called.
V.
Vacu´ity, n. Deficiency in a part; as, a vacuity in the bony palate.
Vagi´na, n. Any sheath, in general. Particularly, the female sexual passage. In birds the lowermost tract of the oviduct is sometimes loosely so called.
Vane, n. (151.) See Vexillum.