from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Difficulty in breathing, often associated with lung or heart disease and resulting in shortness of breath. Also called air hunger.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Difficult or labored respiration.
Latin dyspnoea, from Greek duspnoia : dus-, dys- + pnoiā, -pnoia, breathing.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin dyspnoea, from δύσπνοια (dyspnoia, "bad breathing"), compound of δυσ- (dys, "bad, unfortunate") and πνοή (pnoē, "breeze"). (Wiktionary)