1. A thick black tar intermediate between petroleum and asphalt
   - maltha

Derived forms: mineral tars

Type of: mineral

• refract
• refractile
• refracting telescope
• refraction
• refractive
• refractive index
• refractiveness
• refractivity
• Galatia
• Galatian
• Galatians
• galax
• Galax urceolata
• galaxy
• galbanum
• Galbraith
• Galbulidae
• galbulus
• gale
• galea
• Galega
• Galega officinalis
• Galen
• galena
• Galenist