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noun, Geology.
bituminous sand or sandstone from which asphalt can be obtained.
a sandstone in which hydrocarbons have been trapped; the lighter compounds evaporate, leaving a residue of asphalt in the rock pores


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  • Tarshish

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  • Tarsi

    noun, plural tarsi [tahr-sahy, -see] /ˈtɑr saɪ, -si/ (Show IPA) 1. Anatomy, Zoology. the bones of the proximal segment of the foot; the bones between the tibia and the metatarsus, contributing to the construction of the ankle joint. 2. the small plate of connective tissue along the border of an eyelid. 3. tarsometatarsus. 4. the […]

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