HYDRA

n. multi-headed water serpent which grew new heads immediately after the old ones were cut off (Greek Mythology); large southern constellation; complex problem which grows worse even as part of it is solved; freshwater polyp

This article is about the fictional terrorist organisation. For other uses, see Hydra (disambiguation). HYDRA is a fictional terrorist organization in the Marvel Universe. The organization first appeared in Strange Tales #135. In its original continuity, it was headed by nondescript businessman Arnold Brown, who was killed as S.H.I.E.L.D. apparently crushed the organization. It soon returned, however, headed by Baron Wolfgang von Strucker, with the support of the Nazi Red Skull; HYDRA's changing origin was one of the earliest Marvel retcons. After its initial defeat, several of its branches surfaced, appearing to be unrelated and independent. HYDRA's scientific branch was initially A.I.M. (Advanced Idea Mechanics), which later split off into its own organization. Other factions included THEM and the Secret Empire.
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Hydra may refer to:Lernaean Hydra, a mythological many-headed serpentHydra (constellation), the largest of the modern star constellationsHydra (moon), the third moon of the dwarf planet PlutoHydra (genus), a genus of simple fresh-water animals of the class HydrozoaHydra, Saronic Islands, a Greek islandHydra-Centaurus Supercluster, a supercluster of galaxies
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Noun
1. (Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones; "Hydra was slain by Hercules"
(hypernym) mythical monster, mythical creature
(classification) Greek mythology
2. a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
(synonym) Snake
(hypernym) constellation

Noun
1. 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"
(hypernym) trouble, problem
2. small tubular solitary freshwater hydrozoan polyp
(hypernym) hydrozoan, hydroid
(member-holonym) genus Hydra

n. hydra, multi-headed water serpent which grew new heads immediately after the old ones were cut off (Greek Mythology); complex problem which grows worse even as part of it is solved; freshwater polyp

n. hydra, multi-headed water serpent which grew new heads immediately after the old ones were cut off (Greek Mythology)