Hydra

Hydra has a number of meanings.

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• The Hydra is a mythological many-headed serpent.
• Hydra is a constellation.
• Hydra is a genus of simple fresh-water animals of the class Hydrozoa.
• Hydra, Saronic Islands is a Greek island.
• Hydra is a distributed operating system.
• HYDRA is a fictional secret criminal organization in the Marvel Universe.
• Hydra is a computer chess program.
• Hydra is a software used to test weak network passwords.
• Hydra is a 1990 arcade game by Atari.
• is a jet in GTA: San Andreas.
• Hydra 70 is an air-to-ground rocket.
• The Hydra is a space fighter in the video game series Colony Wars.
• The Hydra is a fictional deity in the Cthulhu mythos of H.P. Lovecraft.