Orthopnoea
//ɔrˈθɒpniə// noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 Shortness of breath when lying flat, causing the person to have to sleep propped up in bed or sitting in a chair. uncountable, usually
Antonyms
All antonymsEtymology
From ortho- + -pnoea, from Ancient Greek ὀρθόπνοια (orthópnoia, “breathing only in an upright posture”), from ὀρθός (orthós, “straight”) + πνοή (pnoḗ, “breath”).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.