hemithorax

noun
hemi·​tho·​rax | \ -ˈthō(ə)r-ˌaks, -ˈthȯ(ə)r- How to pronounce hemithorax (audio) \
plural hemithoraxes or hemithoraces\ -​ˈthōr-​ə-​ˌsēz, -​ˈthȯr-​ How to pronounce hemithoraces (audio) \

Medical Definition of hemithorax

: a lateral half of the thorax

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