| Hydra | sometimes included in the family Saxifragaceae |
|---|---|
| Hydra | a discharge pipe with a valve and spout at which water may be drawn from the mains of waterworks |
| Hydra | a faucet for drawing water from a pipe or cask |
| Hydra | a heavy silvery toxic univalent and bivalent metallic element |
| Hydra | inflammation and swelling of a movable joint because of excess synovial fluid |
| Hydra | small genus of perennial herbs having rhizomes and palmate leaves and small solitary flowers |
| Hydra | perennial herb of northeastern United States having a thick knotted yellow rootstock and large rounded leaves |
| Hydra | any compound that contains water of crystallization |
| Hydra | cause to be hydrated |
| Hydra | become hydrated and combine with water |
| Hydra | supply water or liquid to in order to maintain a healthy balance |
| Hydra | (chemistry) containing combined water (especially water of crystallization as in a hydrate) |