chylothorax

noun

chy·lo·tho·rax | \ -ˈthō(ə)r-ˌaks, -ˈthȯ(ə)r-

plural chylothoraxes or chylothoraces\ -ˈthōr-ə-ˌsēz, -ˈthȯr-

Medical Definition of chylothorax

: an effusion of chyle or chylous fluid into the thoracic cavity