出典:Wiktionary
Representing -πνοια (-pnoia), the common terminal element of the Ancient Greek ἄπνοια (ápnoia, “apnea”), δύσπνοια (dúspnoia, “dyspnea”), εὔπνοια (eúpnoia, “eupnea”), ὀρθόπνοια (orthópnoia, “orthopnea”), etc, from πνέω (pnéō, “I blow”) and πνοή (pnoḗ, “breath, breathing”).