1. Superimposable on its mirror image

Encyclopedia: Amphichiral

• growth
• growth factor
• growth hormone
• growth hormone-releasing factor
• growth industry
• growth rate
• growth regulator
• growth ring
• growth stock
• growth-onset diabetes
• groyne
• Grozny
• Groznyy
• grub
• grub out
• Grub Street
• grub up
• grubber
• grubbily
• grubbiness
• grubby
• grubstake
• grudge
• grudging
• grudgingly