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

Type of: atrium

• jackstones
• jackstraw
• jackstraws
• jacksy
• Jacob
• Jacob Epstein
• Jacob Harmensen
• Jacob's ladder
• Jacob's rod
• Jacob's staff
• Jacobean
• Jacobean lily
• Jacobi
• Jacobian
• Jacobian matrix
• Jacobin
• Jacobinic
• Jacobinical
• Jacobinism
• Jacobite
• Jacobs
• Jacobus Arminius
• jaconet
• Jacopo Robusti
• jacquard