n an abnormality during pregnancy; chorionic villi around the fetus degenerate and form clusters of fluid-filled sacs; usually associated with the death of the fetus
n an abnormality during pregnancy; chorionic villi around the fetus degenerate and form clusters of fluid-filled sacs; usually associated with the death of the fetus
n (Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones
n a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
n trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
we may be facing a hydra that defies any easy solution
n small tubular solitary freshwater hydrozoan polyp