(usually uncountable, plural orthopnoeas or orthopnoeae)
from Ancient Greek [script?] (ortho, “straight”) + [script?] (pnoia, “breath”)
"orthopnoea." YourDictionary, n.d. Web. 20 September 2018. <http://www.yourdictionary.com/orthopnoea>.
orthopnoea. (n.d.). Retrieved September 20th, 2018, from http://www.yourdictionary.com/orthopnoea
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