hydrops

The excessive accumulation of serous fluid in tissues or cavities of the body.

[L.] abnormal accumulation of serous fluid in the tissues or in a body cavity; called also dropsy. See also hydramnios (hydrops amnii), hydrallantois (hydrops allantois).

• fetal h., hydrops fetalis — gross edema of the entire body of the newborn, in hemolytic disease of the newborn.
• h. uteri — see hydramnios, hydrallantois.

The noun has one meaning:

Meaning #1: swelling from excessive accumulation of serous fluid in tissue
  Synonyms: edema, oedema, dropsy