1. The upper chamber of each half of the heart
   - atrium of the heart

Type of: atrium

• paradox
• paradoxical
• paradoxical sleep
• paradoxically
• Paradoxurus
• paraduodenal smear
• paraenesis
• paraesthesia
• paraffin
• paraffin oil
• paraffin scale
• paraffin series
• paraffin wax
• parafovea
• paragenesis
• paragliding
• paragon
• paragonite
• paragraph
• paragrapher
• Paraguay
• Paraguay tea
• Paraguayan
• Paraguayan monetary unit
• parainfluenza virus