1. (medicine) difficulty in breathing when upright, relieved by lying flat

Encyclopedia: Platypnea

• helpless
• helplessly
• helplessness
• helpline
• helpmate
• helpmeet
• Helsingfors
• Helsinki
• helter-skelter
• helve
• helvella
• Helvella acetabulum
• Helvella crispa
• Helvella sulcata
• Helvellaceae
• Helvetian
• Helvetic
• Helvetica
• Helwingia
• Helxine
• Helxine soleirolia
• hem
• hem and haw
• Hemachatus
• Hemachatus haemachatus