bitumens

فِي ٱللُّغَةِ ٱلْإِنْجْلِيزِيَّةِ:

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• تلقي الألفاظ أصد: /ˈbɪtjumɛnz/

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bitumens ج.

1. صِيغَةُ جَمْعٍ مُفْرَدُهَا bitumen#English.

1. • 1796: Antoine-François de Fourcroy, Elements of Chemistry, and Natural History: To which is Prefixed the Philosophy of Chemistry, p209

     Moſt naturaliſts and chemiſts aſcribe the formation of petrolea to the decompoſition of ſolid bitumens by the aƈtion of ſubterraneous fires.

   • 1977: [Author Unknown], The Philosophical Magazine, p212

     Thus, as I have shown that there is a sort of gradation from naphtha to asphaltum, through a series of undefinable petrolea, so this analogy may be extended to the next general variety of the bitumens, coal.