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

Type of: atrium

• synchronised swimming
• synchroniser
• synchronising
• synchronism
• synchronistic
• synchronization
• synchronize
• synchronized
• synchronized swimming
• synchronizer
• synchronizing
• synchronoscope
• synchronous
• synchronous converter
• synchronous motor
• synchronous operation
• synchronously
• synchrony
• synchroscope
• synchrotron
• Synchytriaceae
• Synchytrium
• Synchytrium endobioticum
• synclinal
• syncline