hydra

/ˈhaɪdrə/
IPA guide

Other forms: hydras; hydrae

Definitions of hydra
  1. noun
    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”
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    type of:
    problem, trouble
    a source of difficulty
  2. noun
    small tubular solitary freshwater hydrozoan polyp
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    type of:
    hydroid, hydrozoan
    colonial coelenterates having the polyp phase dominant
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Word Family

Vocabulary lists containing hydra

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Elements of the Universe: Hydr, Hydro ("Water")

The ancients believed that the universe was composed of five basic elements: earth, air, fire, water, and sky. The Greek and Latin words for these elements still show up in our language today. Learn these words that come from the Greek word hydor, meaning "water." Here are links to our complete set of Elements of the Universe lists: Cosm, Cosmo ("Universe") / Terr, Terra ("Earth") / Geo ("Earth") / Hydr, Hydro ("Water") / Aqua ("Water") / Ign, Igni ("Fire") / Pyr, Pyro ("Fire") / Aer, Aero ("Air") / Aether ("Sky") / Aster, Astro ("Star") / Sol ("Sun")

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Reading: Literature - Mythology - Introductory

If learning about the ancient world feels like a herculean task, review these terms related to Greek and Roman mythology. This epic list will take you on an odyssey through the classical world, where you'll encounter gods and goddesses, all-knowing oracles, and legendary creatures like the centaur.

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Reading: Literature - Mythology - Middle School

If learning about the ancient world feels like a herculean task, review these terms related to Greek and Roman mythology. This epic list will take you on an odyssey through the classical world, where you'll encounter gods and goddesses, all-knowing oracles, and legendary creatures like the centaur.

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