albertite /alˈbər-tīt/

A pitch-black solid bitumen

• diopter
• diopters
• dioptrate
• dioptre
• dioptres
• dioptric
• dioptrical
• dioptrics
• diorama
• dioramas
• dioramic
• diorism
• diorisms
• dioristic
• dioristical
• dioristically
• diorite
• diorites
• dioritic
• diorthoses
• diorthosis
• diorthotic
• Dioscorea
• Dioscoreaceae
• dioscoreaceous