Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Shortness of breath when lying flat.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

from Ancient Greek  (ortho, "straight") +  (pnoia, "breath")

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Examples

  • For when a defluxion of cold phlegm takes place on the lungs and heart, the blood is chilled, and the veins, being violently chilled, palpitate in the lungs and heart, and the heart palpitates, so that from this necessity asthma and orthopnoea supervene.

    On The Sacred Disease 2007

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