 hydra |
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| 1. | [ noun ] (astronomy) a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer | |
| Synonyms: | Snake | |
| Related terms: | constellation | |
| 2. | [ noun ] (Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones | |
| Examples: | "Hydra was slain by Hercules" |
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| Related terms: | mythical_monster Greek_mythology | |
| 3. | [ noun ] trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality | |
| Examples: | "we may be facing a hydra that defies any easy solution" |
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| Related terms: | trouble | |
| 4. | [ noun ] (zoology) small tubular solitary freshwater hydrozoan polyp | |
| Related terms: | hydrozoan genus_Hydra | |
| Similar spelling: |
Hyder |
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