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  • noun

Synonyms for Hydra

(Greek mythology) monster with nine heads

a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer


trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality

Related Words

small tubular solitary freshwater hydrozoan polyp

References in periodicals archive ?
Additional evidence hints that at least one planet has already formed around TW Hydrae, Wilner says.
But regardless of whether or not TW Hydrae harbors full-grown planets, "it's nice to have the observational confirmation [of dust coalescing into pebbles] that we all believed was going on," he adds.
In contrast, the nearby TW Hydrae association includes just a few dozen newborn stars but covers a section of sky 15 to 20 degrees wide.
Dubbed TW Hydrae, the star seemed odd in another respect.
In 1989, Brazilian astronomers reported that TW Hydrae had company after all.
V Hydrae is a carbon star and, as such, has a number of carbon-bearing molecules in its atmosphere that act like a red filter.
V Hydrae appears to be a dying red-giant star ready to form a planetary nebula.
Our final target is the brightest galaxy in Hydra, M83, conveniently placed two-thirds of the way from 3rd-magnitude Gamma ([gamma]) Hydrae to 4th-magnitude 1 Centauri.