Medicine

• In general, hydrops ( "HI-drops") is another name for edema
  Edema
  Edema or oedema ; both words from the Greek , oídēma "swelling"), formerly known as dropsy or hydropsy, is an abnormal accumulation of fluid beneath the skin or in one or more cavities of the body that produces swelling...
  
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  • Endolymphatic hydrops - a pathological feature present in Ménière's disease
    Ménière's disease
    Ménière's disease is a disorder of the inner ear that can affect hearing and balance to a varying degree. It is characterized by episodes of vertigo and tinnitus and progressive hearing loss, usually in one ear. It is named after the French physician Prosper Ménière, who, in an article published...
    
    .
  • Hydrops fetalis
    Hydrops fetalis
    Hydrops fetalis is a condition in the fetus characterized by an accumulation of fluid, or edema, in at least two fetal compartments. By comparison, hydrops allantois or hydrops amnion are an accumulation of excessive fluid in the allantoic or amniotic space respectively.-Presentation:Locations can...
    
     is edema in a fetus.

Zoology

• Hydrops
  Hydrops (genus)
  Hydrops is a genus of colubrid snakes. Two species are currently recognized.* Hydrops martii - * Hydrops triangularis -...
  
  , a colubrid snake
  Snake
  Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...
  
   genus
  Genus
  In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
  
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