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orthopny |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Orthopnoea \Or`thop*n[oe]"a\, Orthopny \Or*thop"ny\, n. [L. orthopnoea, Gr ?; 'orqo`sstraight, right + pnei^n to breathe: cf F. orthopn['e]e.] (Med.) Specifically, a morbid condition in which respiration can be performed only in an erect posture; by extension, any difficulty of breathing.
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