Search Result for "hydrothorax": 
Wordnet 3.0

NOUN (1)

1. accumulation of fluid in the pleural cavity (the space between the lungs and the walls of the chest) often resulting from disease of the heart or kidneys; 



The Collaborative International Dictionary of English v.0.48:

Hydrothorax \Hy`dro*tho"rax\, n. [Hydro-, 1 + thorax.] (Med.)
   An accumulation of serous fluid in the cavity of the chest.
   [1913 Webster]


WordNet (r) 3.0 (2006):

hydrothorax
    n 1: accumulation of fluid in the pleural cavity (the space
         between the lungs and the walls of the chest) often
         resulting from disease of the heart or kidneys