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  1. Hydra (genus) - Wikipedia

    Hydra (/ ˈhaɪdrə / HY-drə) is a genus of small freshwater hydrozoans of the phylum Cnidaria.

  2. Hydra | Freshwater, Cnidaria, Polyp | Britannica

    Dec 5, 2025 · Hydra, genus of invertebrate freshwater animals of the class Hydrozoa (phylum Cnidaria). The body of such an organism consists of a thin, usually translucent tube that …

  3. HYDRA Definition & Meaning - Merriam-Webster

    The meaning of HYDRA is a many-headed serpent or monster in Greek mythology that was slain by Hercules and each head of which when cut off was replaced by two others.

  4. Hydra in Greek Mythology – Origin Story & Death - World History …

    Sep 15, 2024 · The Lernaean Hydra, commonly known as the Hydra, is a serpentine monster in Greek and Roman mythology. Its lair was located at the lake of Lerna in the Argolid, a region …

  5. Hydra - Marvel Cinematic Universe Wiki

    Hydra (sometimes stylized as HYDRA) was a global authoritarian-subversive paramilitary terrorist organization. It was founded in ancient times as a cult dedicated to the fanatical worship of …

  6. Hydra - Wikipedia

    Hydra (Marvel Cinematic Universe), an organisation in the Marvel Cinematic Universe based on the comics counterpart Hydra (Dungeons & Dragons), a fictional monster in D&D

  7. How to Use Hydra to Hack Passwords – Penetration Testing Tutorial

    Nov 18, 2022 · Hydra is a brute-forcing tool that helps penetration testers and ethical hackers crack the passwords of network services. Hydra can perform rapid dictionary attacks against …

  8. Hydra – Biology, Classification, Characteristics, and Reproduction

    Hydras are classified under the phylum Cnidaria; some of its relatives are jellyfish and sea anemones. A hydra has many tentacles around the mouth opening.

  9. HYDRA | English meaning - Cambridge Dictionary

    The hydra-headed monster of nationalism is a rapacious beast which, when given the opportunity to feed, tends to devour peoples, populations and nations.

  10. Hydra as a Metaphor: Uncovering the Deeper Meaning Behind its …

    Sep 14, 2024 · The Hydra, a creature from Greek mythology, is often depicted as a serpentine monster with multiple heads. According to legend, when one head was severed, two more …