A medical condition where the airways in the lungs become abnormally narrowed, making it harder to breathe.
From Greek 'bronchos' (windpipe) + 'stenosis' (narrowing). Stenosis comes from Greek 'stenos' meaning narrow, and was adopted into medical terminology in the 1800s.
The '-stenosis' ending is like a medical warning label—whenever you see it, you know something is dangerously squeezed: aortic stenosis, spinal stenosis, bronchostenosis—all describe tubes or passages that are too tight.
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