A medical condition involving excessive mucus or pus accumulation in the thoracic cavity or between the lungs and chest wall.
From Greek blenna (mucus) + thorax (chest). This compound term specifically locates a mucus condition to the chest cavity, following the pattern of anatomical medical terminology.
This word reveals how doctors built specificity: 'blenna-' told you it was a mucus problem, but adding 'thorax' meant they could pinpoint exactly where—showing how medical Greek let doctors describe complex, precise conditions with just two building blocks.
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