American Heritage® Dictionary of the English Language, Fourth Edition
- n. Greek Mythology The many-headed monster that was slain by Hercules.
- n. A constellation in the equatorial region of the southern sky near Cancer, Libra, and Centaurus. Also called Snake2.
- n. A persistent or multifaceted problem that cannot be eradicated by a single effort.
- n. A taxonomic genus within the family Hydridae — predatory freshwater cnidarians, thought not to age, the hydras.
- n. Greek mythology A mythological serpent with seven heads, slain by Hercules as one of his twelve labours. Also called the Lernaean Hydra.
- n. astronomy A spring constellation of the northern sky, said to resemble a serpent. It lies just south of the zodiac and contains the star Alphard.
- n. astronomy The name of one of Pluto's moons. (Named 21 June 2006).
- From Latin Hydra, the mythical serpent, originally from Ancient Greek Ὕδρα. (Wiktionary)
- Middle English Idra, from Latin Hydra, from Greek Hudrā, Hydra, a water serpent. (American Heritage® Dictionary of the English Language, Fourth Edition)
“And another commentator described what he dubbed the Hydra Effect, which means drugs are so profitable and so cheap to produce that even if you begin to cut off the supply in one part of the world, it simply rears its head in another part of the world.”
“It was Julia who’d dreamed up the name Hydra for the miracle anti-inflammatory that also softened your stool, improved your mood, lowered your blood pressure, and didn’t eat away your intestinal lining.”
“The Hydra is two miles off short so that would be the mark at the top.”
“A star in Hydra has been swallowing its own planets -- naughty, naughty!”
“Pixel Bender was formerly called Hydra and it has been shown publicly on several occasions.”
“11In 1921, Kallihroe Parren returned from her political exile in Hydra to find that the terms of women's emancipation had shifted significantly.”
“The chess machine Hydra, which is a chess-specific supercomputer like Deep Blue, was no match for a strong human player using a relatively weak laptop.”
“The Hydra is a many-headed monster, and it does not matter if you chop off one head, it simply grows another.”
“The Hydra was the guardian of the passage, the gatekeeper.”
“The Hydra was a terrifying mythical monster that had the body of a serpent with nine vicious heads.”
These user-created lists contain the word ‘Hydra’.
A list of terms for things with many heads, including animal monsters, plants, human and animal chimera, mythical beings, &c., including the terms to describe them.
The International Astronomical Union (IAU) recognizes 88 official constellations.
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