1. The apparent surface of the imaginary sphere on which celestial bodies appear to be projected
   - celestial sphere, sphere, empyrean, firmament, heavens, welkin

Type of: surface

• hearse
• Hearst
• heart
• heart and soul
• heart attack
• heart block
• heart cherry
• heart disease
• heart failure
• heart line
• heart massage
• heart monitor
• heart murmur
• heart muscle
• Heart of Dixie
• Heart of India
• heart pea
• heart rate
• heart rhythm
• heart specialist
• heart surgeon
• heart surgery
• heart urchin
• heart valve
• heart ventricle