a fibrous substance resembling charcoal and having a high carbon content, often occurring in thin layers in bituminous coal. Also called mother of coal .
[ 1795-1805 ]
a fibrous substance resembling charcoal and having a high carbon content, often occurring in thin layers in bituminous coal. Also called mother of coal .
[ 1795-1805 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012