UL´NA, _n._ Inner or posterior bone of forearm.
UL´NAR, _a._ Pertaining to the ulna.
UMBIL´ICAL, _a._ Relating to the umbilicus.
UMBIL´ICATE, _a._ Pitted, as if with an umbilicus.
UMBILI´CUS, _n._ Navel. Pitted scar, indicating point of entrance of
placental vessels into the fœtus. Also, any similar pit or depression,
as that on the scape of a feather at junction of rhachis and calamus.