noun
also or·thop·noea ȯ(r)ˈthäpnēə also ˌȯ(r)ˌthäpˈnēə or ˌȯ(r)thəˈn-
( -s )
Etymology: Latin orthopnoea, from Greek orthopnoia, from orth- + -pnoia -pnea
: inability to breathe except in an upright position (as in congestive heart failure)
• or·thop·ne·ic also or·thop·noe·ic | ̷ ̷(ˌ) ̷ ̷| ̷ ̷ik adjective