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hydra
 
Noun hydra has 4 senses
  1. Hydra - (Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones; "Hydra was slain by Hercules"
    --1 is a kind of     mythical monster, mythical creature
  2. Hydra, Snake - a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
    --2 is a kind of constellation
  3. hydra - 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"
    --3 is a kind of     trouble, problem
  4. hydra - small tubular solitary freshwater hydrozoan polyp
    --4 is a kind of     hydrozoan, hydroid
    --4 is a member of genus Hydra
hydnocarpus laurifolia hydnocarpus oil hydnocarpus wightiana hydnoraceae hydnum hydorocartons hydra-headed hydra hydra hydracele hydralazine hydramnios hydrangea hydrangea anomala hydrangea arborescens hydrangea family hydrangea macrophylla hortensis

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