used in The Lightning Thief
only 1 use
(click/touch triangles for details)
Greek mythology: a monster with nine heads; when struck off each head was replaced by two new ones
or more generally (as a common noun):
trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
- The plaque read, HYDRA HEAD #1, WOODSTOCK, N.Y., 1969.
Chapter 9 (60% in)
There are no more uses of "Hydra" in The Lightning Thief.