IPA: //haɪdrəˈθɔræks//
KK: /haɪdroʊˈθɔræks/
A condition where there is an abnormal buildup of fluid in the space around the lungs, which can occur in one or both sides of the chest.
The doctor diagnosed the patient with hydrothorax after observing the fluid accumulation in the chest cavity.
Hydrothorax is formed from "hydro-" (from Greek "hydor", meaning water) and "thorax" (from Greek "thorax", meaning chest). The term refers to the presence of fluid in the chest cavity, specifically water or fluid accumulation in the thoracic area.
Think of 'water' ('hydro-') in the 'chest' ('thorax') to remember that hydrothorax refers to fluid in the chest.