1. Chiastolite; - so called from the tessellated appearance of a cross section 
2. A twin crystal

Derived forms: macles

• Frederick James Furnivall
• Frederick Law Olmsted
• Frederick Loewe
• Frederick Moore Vinson
• Frederick North
• Frederick Sanger
• Frederick Soddy
• Frederick the Great
• Frederick William
• Frederick William I
• Frederick William II
• Frederick William III
• Frederick William IV
• Fredericksburg
• Frederico Garcia Lorca
• Fredericton
• free
• free agency
• free agent
• free association
• free burning
• free central placentation
• free electron
• free energy
• free fall